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Changes:
2013/03/31: Version 10.1.5 - Sebastien Godard (sysstat <at> orange.fr)
* mpstat now takes into account every interrupt per processor
so that their number adds up to the number displayed for CPU "all".
* [Peter Schiffer]: systemd unit file couldn't be installed
because PKG_PROG_PKG_CONFIG macro wasn't expanded in configure
script. This is now fixed.
* [Benno Schulenberg]: Fixed a small inconsistency in pidstat
usage message.
* Cosmetic fixes in pidstat manual page.
* NLS updated (de, eo, fi, fr, ja, nb, nl, ru, uk, vi)
* CREDITS file updated.
2013/03/08: Version 10.1.4 - Sebastien Godard (sysstat <at> orange.fr)
* [Christophe Cerin]: pidstat now stops and displays its average
stats when it receives SIGINT (crtl/c).
* mpstat now stops and displays its average stats when it
receives SIGINT (crtl/c).
* sar now stops and displays its average stats when it receives
SIGINT (crtl/c).
* pidstat now displays task's UID for all tasks.
* pidstat: -U option added. This option tells pidstat to display
the username of the task instead of its UID. When this option is
followed by a user name, then only tasks belonging to the
specified user are displayed by pidstat.
* pidstat manual page updated.
* Now use sigaction() instead of signal() for signals handling
to avoid portability problems.
* FAQ updated.
* NLS updated.
2012/12/23: Version 10.1.3 - Sebastien Godard (sysstat <at> orange.fr)
* Changed network counters (used by sar -n {DEV | EDEV }) to
unsigned long long to keep in sync with current kernels.
WARNING: This breaks compatibility with older sar data
files format for network statistics.
* Changed IPv4 counters (used by sar -n { IP | EIP}) to
unsigned long long to keep in sync with current kernels.
WARNING: This breaks compatibility with older sar data
files format for IPv4 statistics.
* Changed IPv6 counters (used by sar -n { IP6 | EIP6}) to
unsigned long long to keep in sync with current kernels.
WARNING: This breaks compatibility with older sar data
files format for IPv6 statistics.
* [Peter Schiffer]: Added option -y to iostat. This option
prevents iostat from displaying its first report with
statistics since system boot.
* [Peter Schiffer]: Increase NR_CPUS and NR_IRQS values.
* [John Lau]: sadc didn't collect all its activities when
it had to overwrite an old sysstat data file with some
unknown activity formats. This is now fixed.
* Now install sadc in $prefix/lib64 directory on 64 bit machines
even if $prefix/lib directory also exists.
* Fixed DTD document: If computer has run all day without
restart, XML output file from sadf -x has no boot elements.
* Remove heading spaces in softirq names displayed by mpstat
for easier reading.
* Fixed wrong command execution syntax in configure script.
* Removed several unused definitions in some header files.
* iostat manual page updated.
* NLS updated.
* CREDITS file updated.
2012/10/06: Version 10.1.2 - Sebastien Godard (sysstat <at> orange.fr)
* New field added to sar -u and mpstat: %gnice (time spent
running a niced guest).
* New field added to sar -r: kbdirty (amount of memory waiting
to get written back to disk).
* [Peter Schiffer]: systemd support added.
* [Peter Schiffer]: Sysstat init script updated to make it
more conforming to LSB.
* XML DTD document name is now tagged with a version number.
* Fixed a fatal error when compiled with -Werror=format-security.
* sar, sadf and mpstat manual pages updated.
* DTD and XSD documents updated.
* Cosmetic change in sadf -H output.
* NLS updated.
2012/07/29: Version 10.1.1 - Sebastien Godard (sysstat <at> orange.fr)
* Added option -[0-9]+ to sar to show data of that days ago.
* [Peter Schiffer]: Persistent device names support added to
sar and iostat (option -j).
* [Peter Schiffer]: Make sysstat disk counters consistent
with those from latest kernel (3.5).
WARNING: This breaks compatibility with older sar data
files format for disk activity.
* [Peter Schiffer]: sar: Use /sys/dev/block/major:minor links
to determine devices real name.
* Part of 'sadf -H' output was written to stderr instead of
stdout. This is now fixed.
* WARNING: sadf: Option '-T' has been renamed into '-U', and
option '-t' has been renamed into '-T'.
* sadf: New option -t added. This option tells sadf to display
the timestamps in the local time of the data file creator
instead of UTC. The same option exists for sar.
* [Peter Schiffer]: Various cosmetic changes in manual pages
and usage messages displayed by sysstat commands.
* FAQ updated.
* NLS updated.
* sar, sadf and iostat manual pages updated.
2012/05/16: Version 10.0.5 - Sebastien Godard (sysstat <at> orange.fr)
* [Alain Chereau]: Options -g and -T added to iostat. These
options enable the user to display statistics for groups of
devices.
* [Vitezslav Cizek]: sadc now overwrites its standard daily
data file when this file is from a past month.
* sadf: Change time format from HH-MM-SS to HH:MM:SS in the
various reports displayed by sadf.
* XSD document updated: Added a maxOccurs indicator for the
timestamp element.
* Added option --enable-collect-all to configure script.
This option tells sadc to collect all possible activities,
including optional ones.
* [Peter Schiffer]: Set exit code to 0 for sa2 shell script.
* NLS updated. Croatian translation added.
* iostat and sadc manual pages updated.
* FAQ updated.
* CREDITS file updated.
2012/03/07: Version 10.0.4 - Sebastien Godard (sysstat <at> orange.fr)
* [Andrey Borzenkov]: Don't take virtual devices into account in
sar -b results.
* [Peter Schiffer]: iostat didn't display target device
information when a symbolic link was specified as a parameter.
This is now fixed.
* The number of jiffies spent by a CPU in guest mode given by the
corresponding counter in /proc/stat may be slightly different
from that included in the user counter. Take this into account
when calculating current time interval value.
* configure script updated: Added --disable-stripping option.
Using this option tells configure to NOT strip object files.
* FAQ updated.
* sa1 manual page updated.
* NLS updated. Serbian translation added.
2011/11/27: Version 10.0.3 - Sebastien Godard (sysstat <at> orange.fr)
* sadf: New output format added: JSON (JavaScript Object
Notation). This format can be displayed with sadf's option -j.
* [Jurgen Heinemann]: Fixed a bug in sadf XML output.
* [Jurgen Heinemann]: Fixed several bugs in DTD and XSD
documents.
* [Petr Uzel]: Fixed random crash with iostat when called with
option -N [NOVELL Bug#729130].
* sadf manual page updated.
* NLS updated.
* CREDITS file updated.
2011/08/28: Version 10.0.2 - Sebastien Godard (sysstat <at> orange.fr)
* sadf modified to make it easier to add new output formats.
Its design is still not generic anyway.
* Option -T added to sadf: This option tells sadf to display
timestamps in seconds since the epoch (when applicable).
* Option "-P ON" added to mpstat. This option tells mpstat
to display stats only for online CPU.
* [Kei Ishida]: pidstat displayed stats for processes that
had terminated while pidstat was running. This is now fixed.
* [Jeroen Roovers]: Automate translation files handling in
Makefile.in.
* DTD and XSD documents updated.
* sadf and mpstat manual pages updated.
* pidstat manual page updated: Added description of field %MEM
displayed by pidstat -r.
* Various cosmetic changes (sar.c, sadf.c).
* NLS updated.
* CREDITS file updated.
2011/06/03: Version 10.0.1 - Sebastien Godard (sysstat <at> orange.fr)
* Added USB devices statistics to sar and sadc. The option
"-m USB" can now be used with sar to take a snapshot of all
the USB devices currently plugged into the system.
* sadf -p now displays the sensor device name for temperature,
voltage inputs and fans statistics.
* sar and pidstat: Check that _("Average") string doesn't exceed
the size of the timestamp buffer.
* [Ivana Varekova]: Added option -h to iostat. This option makes
the device utilization report easier to read with long device
names.
* [Ivana Varekova]: cifsiostat didn't count open files from the
"Posix Open" column in /proc/fs/cifs/Stats file. This is now
fixed.
* [Ivana Varekova]: Close file descriptor in read_uptime()
function (rd_stats.c file).
* Fixed XML output displayed by sadf (hugepages statistics were
included in <power-management> section).
* sar: Decrease column width for sensor device name (temperature,
voltage inputs and fans statistics).
* Remove unnecessary arguments from functions in pr_stats.c.
* sar manual page updated.
* DTD and XSD documents updated and cleaned.
* NLS updated. Esperanto translation added.
* CREDITS file updated.
2011/03/15: Version 10.0.0 - Sebastien Godard (sysstat <at> orange.fr)
* [Ivana Varekova]: Fixed a problem with long NFS and CIFS share
names in cifsiostat and nfsiostat.
* [Ivana Varekova]: Added the possibility to extend the number
of slots for NFS and CIFS mount points on the fly.
* [Ivana Varekova]: Check calloc() return value in cifsiostat
and nfsiostat.
* [Jan Kaluza]: Added --debuginfo option to cifsiostat and
nfsiostat.
* cifsiostat and nfsiostat manual pages updated.
* Don't link sysstat's commands with sensors library if not
needed [DEBIAN Bug#612571].
* [Adam Heath]: iostat incorrectly mapped device-mapper IDs
greater than 256. This is now fixed [DEBIAN Bug#614397].
* Sysstat's commands option -V now displays the version number
on stdout and returns 0 for the exit code.
* sysstat_panic function is now defined only in DEBUG mode.
* NLS updated. Ukrainian translation added.
* CREDITS file updated.
2010/12/26: Version 9.1.7 - Sebastien Godard (sysstat <at> orange.fr)
INFO: stats_queue structure format has changed and is *not*
compatible with the previous one [+1]
* sar now tells sadc to read only the necessary groups of
activities.
* Added a new metric (number of tasks waiting for I/O) to
sar -q.
* Added two new metrics (amount of active and inactive
memory) to sar -r.
* [Ivana Varekova]: Fix segfaults on bogus localtime input.
* Fixed bogus CPU statistics output, which happened when
CPU user value from /proc/stat wasn't incremented whereas
CPU guest value was.
* nfsiostat now takes into account POSIXLY_CORRECT environment
variable. nfsiostat default output is expressed in kB/s,
unless this variable is set (in which case the output is
expressed in blocks/s).
* No longer assume that device-mapper major number is 253.
Get the real number from /proc/devices file.
* DTD and XSD documents updated.
* [Kenichi Okuyama]: Small change to sar manual page.
* sar manual page updated.
* NLS updated.
* Code cleaned.
2010/11/10: Version 9.1.6 - Sebastien Godard (sysstat <at> orange.fr)
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x2171]
* Added a new magical value for each activity in file.
A format change can now hit only one activity instead of
the whole file.
* Added CPU average clock frequency statistics to sar and sadc.
* Added hugepages utilization statistics to sar and sadc.
* Fixed some differences between XML output (as displayed by
sadf -x) and DTD document.
* sadc -S POWER didn't include voltage inputs statistics.
This is now fixed.
* Define groups of activities: Each activity has now a new
attribute specifying the group it belongs to (POWER, IPV6, etc.)
* [Ivana Varekova]: Moved manual pages to $prefix/share/man
instead of $prefix/man.
* [Ivana Varekova]: Fixed configure's --disable-man-group option.
* [Ivana Varekova]: Added SADC_OPTIONS to sysstat configuration file.
* [Ivana Varekova]: Added sysstat(5) manual page.
* sar manual page updated.
* DTD and XSD documents updated.
* NLS updated.
* Split up prf_stats.c file into rndr_stats.c and xml_stats.c
* Moved cron files in a separate cron subdirectory.
* Made sysstat git aware.
* CREDITS file updated.
2010/09/12: Version 9.1.5 - Sebastien Godard (sysstat <at> orange.fr)
* Added voltage inputs statistics to sar and sadc.
* Added %temp field to device temperature statistics (sar -m TEMP).
* Added drpm field to fan speed statistics (sar -m FAN).
* XSD and DTD documents updated.
* sar manual page updated. Indicate that svctm field should
no longer be trusted.
* Removed link to isag(1) from man pages.
* NLS updated. Czech translation added.
* Sample crontabs and sysstat init script: Don't collect disk
data by default.
* Code cleaned.
2010/07/29: Version 9.1.4 - Sebastien Godard (sysstat <at> orange.fr)
* [Jan Kaluza]: Added fan speed and device temperature
statistics to sar and sadc.
* [Jan Kaluza]: Configure script updated. Now check for
lm_sensors library.
* Configure script updated: Added --disable-sensors option.
* Configure script updated: Removed --enable-smp-race option.
* iconfig script updated.
* sar manual page updated.
* XSD and DTD documents updated.
* [Ivana Varekova]: sysstat init script updated.
* Default owner for sadc/sar crontab is now root.
* Various fixes in cifsiostat and nfsiostat manual pages.
* NLS updated.
2010/06/27: Version 9.1.3 - Sebastien Godard (sysstat <at> orange.fr)
* [Ivana Varekova]: Move NFS code out from iostat and create
the new nfsiostat command.
* [Ivana Varekova]: Added cifsiostat command. This command
displays CIFS statistics.
* [Mario Konrad]: Added regular expressions support to pidstat's
option -C.
* [Mario Konrad]: Added option -s to pidstat to display stack
statistics.
* [Ivana Varekova]: Fixed condition used by sar to distinguish
betwwen a counter reset by a newly registered device and a
counter overflow.
* [Jan Kaluza]: Added --debuginfo option to iostat.
* [Jan Kaluza]: Added --enable-debuginfo option to configure script.
* iconfig configuration script updated.
* iostat manual page updated. Indicate that svctm field should
no longer be trusted.
* pidstat manual page updated.
* autoconf script updated.
* NLS updated.
* README and CREDITS files updated.
2010/05/23: Version 9.1.2 - Sebastien Godard (sysstat <at> orange.fr)
* Added r_await and w_await fields to iostat's extended statistics.
* Added support for tickless CPUs in sar and mpstat.
* NLS was not taken into account when mpstat or sar were displaying
some null statistics. This is now fixed.
* sadc no longer syncs data with its output file contents. It
put a pain on flash devices as it undermined any tuning of
the vm's write behavior [DEBIAN Bug#559686].
* NLS updated. Basque translation added.
* iostat, sar and sa1 manual pages updated.
* CREDITS file updated.
2010/02/28: Version 9.1.1 - Sebastien Godard (sysstat <at> orange.fr)
* Remove support for kernels older than 2.6.x.
* iostat now takes into account POSIXLY_CORRECT environment
variable. iostat default output for disk utilization is
expressed in kB/s, unless this variable is set (in which case
the output is expressed in blocks/s).
* mpstat can now display per processor software interrupts
statistics. This requires Linux kernel 2.6.31 or later.
* Because of a change in /proc/interrupts file format, mpstat
was no longer counting the proper number of interrupts. This
is now fixed.
* Manual pages updated.
* NLS updated.
* Code cleaned.
2009/11/11: Version 9.0.6 - Sebastien Godard (sysstat <at> orange.fr)
* "sadf -x" now takes into account options -s and -e (which
specify a starting and ending time) and also interval and
count parameters [DEBIAN bug#546259].
* Option -C added to sadf. Use it to tell sadf to display comments
present in file (also works with XML format).
* sar and sadf sometimes didn't handle COMMENT records properly.
This is now fixed.
* XML output (displayed by sadf -x) modified for kernel tables
statistics.
* XSD and DTD documents updated.
* [Yibin Shen]: HZ variable was not explicitly set in sadc.c. This
is now fixed.
* [Lans Carstensen]: sargraph added (sargraph is a shell script
used to make graphs based on sadf XML output).
* sadf manual page updated.
* FAQ updated.
* NLS updated.
* CREDITS file updated.
2009/09/20: Version 9.0.5 - Sebastien Godard (sysstat <at> orange.fr)
* sysstat should now be able to pretty print device names whose
minor numbers are greater than or equal to 256. (Tests have
been made on a large 26TB RHEL5/PP Linux cluster.)
* sadc manual page updated.
* NLS updated.
* FAQ updated.
2009/07/19: Version 9.0.4 - Sebastien Godard (sysstat <at> orange.fr)
* [Jonathan Kamens]: Fix double free/memory corruption bug
with sadc.
* [Jeroen Roovers]: Get entirely rid of implicit rule for
libsyscom.a in Makefile to fix a problem with parallel
execution.
* sysstat.ioconf configuration file updated.
* NLS updated.
* CREDITS file updated.
2009/05/24: Version 9.0.3 - Sebastien Godard (sysstat <at> orange.fr)
* [Michael Blakeley]: Option -z added to iostat. This option
tells iostat to omit output for any devices for which there
was no activity during the sample period.
* [Tomasz Pala]: Fix mpstat where interrupt values should be
read as unsigned integers.
* sar -n ALL didn't select IPv6 statistics. This is now fixed.
* iostat, sar and mpstat manual pages updated.
* sadf -x now displays file creation date.
* XSD and DTD documents updated.
* NLS updated. Latvian translation added.
* CREDITS file updated.
* Code cleaned.
2009/04/02: Version 9.0.2 - Sebastien Godard (sysstat <at> orange.fr)
* sadc can now collect partition statistics in addition to disk ones.
Keywords XDISK and XALL have been added to -S option.
* Fixed a memory corruption in pidstat and iostat. This corruption
could happen when a list of comma-separated values following
option -p was entered on the command line.
* configure now takes into account a new variable named rcdir.
This variable may be used to specify the directory where
startup scripts will be installed.
* The value of directory for installing documentation files
can now be set with configure's --docdir option.
* Fixed a small bug in activity.c file, where there was a
missing semicolon between two fields.
* sar and sadc manual pages updated.
* NLS updated.
* CREDITS file updated.
2009/03/07: Version 9.0.1 - Sebastien Godard (sysstat <at> orange.fr)
* Fix a crash with sar where a pointer was freed twice.
* NLS updated.
* sar manual page updated.
* CREDITS file updated.
2009/03/01: Version 9.0.0 - Sebastien Godard (sysstat <at> orange.fr)
* Option -m added to sar. This option is intended to display
power management statistics. At the present time, only
CPU frequency statistics are available.
* sadc updated: Option "-S POWER" tells sadc to collect power
management statistics.
* sadf command updated to take into account power management
statistics.
* [Mike Harvey]: No longer truncate the interval of time to
32 bits, as this may cause some problems when displaying
average values statistics on machines with hundreds of CPU.
* read_uptime(): Cast values read from /proc/uptime to
unsigned long long.
* Fixed a small bug in sar where it didn't parse arguments
properly when some options were entered in a specific order.
* sadc and sar manual pages updated.
* XSD and DTD documents updated.
* FAQ updated.
* NLS updated.
* Code cleaned. Makefile cleaned.
2009/01/11: Version 8.1.8 - Sebastien Godard (sysstat <at> orange.fr)
* IPv6 support added. A bunch of new metrics have been added to
sar, enabling the user to display statistics for IPv6 protocol
family (IPv6, ICMPv6, UDPv6 and network sockets).
* sadc updated: Option "-S IPV6" tells sadc to collect IPv6
statistics.
* sadf command updated to take into account IPv6 statistics.
* Options -S (for sadc), -P (for mpstat, sar and sadf), -p (for
iostat and pidstat) and -n and -I (for sar) now accept a list of
comma-separated arguments.
* [Ivana Varekova]: Make iostat display statistics for devices only
(and not partitions) when not using its option -d. This was
no longer possible with kernels 2.6.25 and later because iostat
couldn't distinguish between devices and partitions any more.
* iostat's options -x and -p are no longer mutually exclusive:
Extended statistics are now available even for partitions with
recent kernels.
* iostat was unable to read stats from sysfs for devices who had
a slash in their names (for example, iostat -p /dev/cciss/c0d0
didn't work properly before). This is now fixed.
* [Amir Rapson]: Fixed a bug in iostat where %CPU spent
servicing hard and soft irq were counted twice. This bug
was introduced in 8.1.5.
* DTD and XSD files updated.
* Manual pages updated.
* NLS updated. Maltese translation added.
* CREDITS file updated.
2008/11/13: Version 8.1.7 - Sebastien Godard (sysstat <at> orange.fr)
* Support for SNMP statistics added to sar. Several keywords
have been added to option "-n". The user can now display
statistics about IP, ICMP, TCP and UDP network traffic.
* sadc updated: Option "-S SNMP" tells sadc to collect SNMP
statistics.
* sadf command updated to take into account SNMP statistics.
* sadf -x now also displays number of CPU.
* DTD and XSD files updated.
* sar/sadc: Each item (like network interfaces) is now counted
once.
* [Eduardo Ferro Aldama]: Option -l added to pidstat. This
option enables the user to display the whole command line for
each process.
* Option -h added to sar. This option displays a short help message.
* Cosmetic change in sadf -x output for network statistics.
* sadf -H now displays the real name of each activity saved in file.
* Fixed some memory leaks detected by valgrind.
* pidstat, sar and sadc manual pages updated.
* FAQ updated.
* NLS updated.
* CREDITS file updated.
* Code cleaned.
2008/09/30: Version 8.1.6 - Sebastien Godard (sysstat <at> orange.fr)
* [David Alan Gilbert]: Option -h added to pidstat. This
option is used to display all activities horizontally on a
single line.
* Fixed a bug in pidstat: When pidstat was used to monitor a
process and all its threads (with pidstat's option -t), it
could display weird values if the thread group leader terminated.
* Header line displayed by sar, iostat, mpstat, pidstat and
sadf -H now includes the number of CPU.
* Use the correct word TGID instead of PID with pidstat -t.
* mpstat now displays stats for all interrupts, including NMI,
LOC, etc.
* sar and sadf now check that CPU activity is available in file.
* iostat's option -t now always displays the date and the time.
* Added option "--disable-documentation" to ./configure. Using
this option prevents documentation files (including manual
pages) from being installed.
* iconfig script updated. Now ask the user for documentation
and isag script installation.
* Manual pages updated.
* NLS updated. Indonesian and Chinese (traditional) translations
added.
* README-nls file updated.
* Makefile updated: There is now a dedicated target to install
or uninstall NLS files
* FAQ updated.
* CREDITS file updated.
* Code cleaned.
2008/07/14: Version 8.1.5 - Sebastien Godard (sysstat <at> orange.fr)
* Added virtual machine time accounting to "sar -u ALL" and
mpstat (%guest).
* pidstat has also been updated to be able to display time
spent in virtual machine for a task, and for a task and all
its children.
* Option -S added to sar: This options tells sar to display
swap space utilization. Option -r now only displays memory
utilization.
* Added %swpcad to sar -S (percentage of cached swap memory
in relation to the amount of used swap space).
* Added kbcommit and %commit to sar -r (amount and percentage
of memory needed for current workload).
* sadf -x now distinguishes between options -r and -R.
* sadf command updated to take into account new fields
(%guest, %swpcad, etc.)
* [Ivana Varekova]: iostat now displays the total number of
operations per second in the NFS report.
* Fixed iostat so that %system (percentage of CPU utilization
that occurred while executing at system level) also takes
into account time spent to service interrupts and softirqs.
* Added a missing header line for activities with multiple
outputs displayed by sar (eg. sar -rR ...).
* Makefile updated: There is now a dedicated target to install
or uninstall manual pages.
* Manual pages updated.
* Code cleaned.
* XSD and DTD documents updated.
* isag script updated.
2008/06/22: Version 8.1.4 - Sebastien Godard (sysstat <at> orange.fr)
* sar can now collect and display all CPU fields with its new
option "-u ALL". sadf has also been updated to be able to
display them.
* mpstat can now display per-CPU interrupts statistics with its
option "-I CPU". This was a feature available in sar that was
removed in previous sysstat version.
* mpstat uses now a separate option ("-I SUM") to display the
total number of interrupts for each processor.
* Option -A added to mpstat. This switch tells mpstat to display
all possible activities.
* NFS v4 support added to sar -n NFS(D). When both NFS v3 and
NFS v4 are used, stats from NFS v3 and NFS v4 are added
together [DEBIAN bug#434442].
* Code cleaned: mpstat, iostat and pidstat now use the common
functions from rd_stats.c to read CPU stats from /proc/stat;
Computing extended disk statistics (service time, etc.) is now
done in one place (common function used by iostat, sar, sadf).
* All sysstat commands are made consistent with how parameters
are interpreted: "COMMAND <interval>" now generates a report
continuously, "COMMAND <interval> 0" causes an error,
"COMMAND 0" displays a report since system startup
[DEBIAN bug#475707].
* Changed XML output for processes and context switches displayed
by sadf -x to be consistent with output from sar.
* mpstat and sar manual pages updated.
* isag script updated.
* FAQ updated.
* DTD and XML Schema updated.
* NLS updated.
2008/05/25: Version 8.1.3 - Sebastien Godard (sysstat <at> orange.fr)
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x2170]
* sar, sadc and sadf heavily modified. It is now easier to add
(or remove) activities since sar and sadc have been rewritten
in a non-monolithic way with a generic design architecture.
* Option -c removed from sar. Task creation and context switch
activities are now merged and available with option -w.
* sar no longer displays interrupts per processor statistics.
This feature will be included in mpstat in next sysstat version.
* Option -S added to sadc. This option replaces previous options
-I or -d, and is used to select activities that should be
collected and saved in file. It is even possible to
select each activity collected by sadc.
* Format of data files created by sar/sadc heavily modified.
In some cases, it is now possible to add or remove activities
while keeping a compatible format that can be read by a previous
or future sysstat version.
* sadf now only displays activities that have been explicitly
selected.
* sar now checks that devices displayed by option -d are whole
devices (and not partitions) using sysstat.ioconf configuration
file. If this file is not found in its default directory, then
sysstat looks for it in current directory.
* gettextize entire usage() messages so that translators have
free scope to act.
* DTD and XML Schema updated.
* Manual pages updated.
* Crontab samples updated.
* FAQ updated.
* Code cleaned.
2008/03/16: Version 8.1.2 - Sebastien Godard (sysstat <at> orange.fr)
* [Ivana Varekova]: iostat now displays read and write operations
per second in the NFS report.
* [Tomas Mraz]: sadc now retries to write its buffers when the
write() call has been interrupted by a signal.
* Use setbuf() call instead of fflush() to indicate that data
should not be buffered to stdout.
* Option -h added to sadf. Used with options -d or -D, it
indicates that all activities should be displayed horizontally
on a single line of data.
* sadf -d and sadf -D now display the list of fields for easier
data reading.
* sadf and iostat manual pages updated.
* NLS updated: Chinese (simplified) translation added, other
translations updated.
2008/02/10: Version 8.1.1 - Sebastien Godard (sysstat <at> orange.fr)
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x216f]
* System activity data files now have extra header data that
enable to identify which version of sysstat created them.
* sadf -H now displays the version of sysstat used to create
a system activity data file.
* Machine architecture is now displayed in the reports header.
sadf -x also displays machine architecture.
* DTD and XML Schema documents updated.
* The number of processors was not properly calculated on
machines where a directory named cpuidle was present in the
/sys/devices/system/cpu directory [GENTOO bug# 207886].
* Use __CPU_SETSIZE definition from <sched.h> instead of a
static definition for the maximum number of CPUs (NR_CPUS).
* Improved error messages displayed by sysstat's commands.
* NLS updated: Finnish translation added, Dutch translation
updated.
* FAQ updated.
* Code cleaned and documented. Linux-like style applied to
code source. Large functions split into smaller ones.
2008/01/06: Version 8.0.4 - Sebastien Godard (sysstat <at> orange.fr)
* Removed a 'packed' attribute in pidstat.h that generated
a warning with gcc 4.1.1.
* Take account of all memory zone types when calculating
pgscank, pgscand and pgsteal displayed by sar -B.
* XML Schema added. Useful with sadf option -x.
* sadc and sadf manual pages updated.
* NLS updated: Dutch translation added.
* NLS updated: Brazilian Portuguese translation added.
* NLS updated: Vietnamese translation added.
* NLS updated: Kirghiz translation added.
* NLS updated: Added a PO template file in nls directory.
Makefile modified to enable PO files update.
* sccsid string now also includes package name and version number.
* Makefile updated: Startup links are named S01xxx instead of S03xxx
to be consistent with chkconfig values.
* Various spelling fixes.
* CREDITS file updated.
2007/11/19: Version 8.0.3 - Sebastien Godard (sysstat <at> orange.fr)
* mpstat and sar didn't parse /proc/interrupts correctly when
some CPUs had been disabled. This is now fixed.
* Fixed a bug in pidstat where a confusion between PID and TID
could sometimes happen, resulting in erroneous statistics
values being displayed.
* iconfig script updated: Help for --enable-compress-manpg
parameter is now available, help for --enable-install-cron
parameter updated, added parameter cron_interval.
* sa2 shell script can now compress sar data files using bzip2.
* Makefile updated: Now also remove sysstat.crond.sample.in.
Documentation is installed in $prefix/share/doc/ instead of
$prefix/doc/ directory.
* isag updated.
* FAQ updated.
* CREDITS file updated.
* Sysstat's URL updated.
2007/10/26: Version 8.0.2 - Sebastien Godard (sysstat <at> orange.fr)
* Option -w added to pidstat. pidstat can now display task
switching activity.
* Fixed a memory leak in pidstat that was triggered when
reading stats for threads.
* Fixed a bug where device names were incorrectly displayed by
sar -d or sar -dp. Fixed also this bug for sadf.
* When using option -o, sar now saves by default all the
statistics into the file, including interrupts and disks
statistics. Interrupts and disks statistics remain optional
when using sadc.
* sysstat startup script updated.
* sar and pidstat manual pages updated.
* isag updated.
* NLS updated.
* Code cleaned.
* CREDITS file updated.
2007/09/30: Version 8.0.1 - Sebastien Godard (sysstat <at> orange.fr)
* Option -t added to pistat. pidstat can now display stats for
every thread (TID) of a process.
* pidstat's option -T CHILD now reports global statistics for
selected tasks and all their children (and not only for the
children).
* pidstat now reads VSZ and RSS values from /proc/#/stat instead
of /proc/#/status.
* Fixed a rare parallel make issue creating archive libsyscom.a
[GENTOO bug #193208].
* pidstat manual page updated.
* SCCS identification string added to all commands.
* NLS updated.
* Code cleaned.
* CREDITS file updated.
2007/09/02: Version 8.0.0 - Sebastien Godard (sysstat <at> orange.fr)
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x216e]
* pidstat command improved. It is now able to report CPU and
page fault statistics for the child processes of a task.
* Option -T added to pidstat. This option tells pidstat if
statistics are to be reported for tasks (which is the default)
or for their children.
* Fixed a security flaw in sysstat startup script (CVE-2007-3852).
* Removed super*, dquot* and rtsig* fields from sar -v.
They were made obsolete in Linux kernels 2.6.
* Fields file-sz and inode-sz from sar -v renamed to file-nr
and inode-nr.
* Added field pty-nr (number of pseudo-terminals) to sar -v.
* Added field tcp-tw (number of sockets in TIME_WAIT state)
to sar -n SOCK.
* sar and sadf updated so that they can properly extract records
(with their options -s and -e) from a file containing data for
two consecutive days.
* Added option "--enable-install-isag" to "configure" to enable
the user to install isag script.
* Fixed a typo in iconfig script: The user was unable to specify
the crontab owner.
* Manual pages updated.
* Sysstat DTD file updated.
* isag updated.
* NLS updated.
* FAQ updated.
* CREDITS file updated.
* Author's email updated.
2007/07/08: Version 7.1.6 - Sebastien Godard (sysstat <at> wanadoo.fr)
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x216d]
* New VM paging metrics added to sar (option -B).
* Options -x and -X have been removed from sar. Use pidstat(1)
command instead.
* NR_CPUS increased to 16384 so that sysstat can be used on
very large systems.
* Fixed a bug in sadc.c where it was using a hardcoded 256 char
buffer to store lines read from /proc/interrupts.
* sar updated to avoid overflow when computing some average values.
* sar and mpstat manual pages updated.
* Sysstat DTD file updated.
* FAQ updated.
* NLS updated.
* CREDITS file updated.
2007/06/07: Version 7.1.5 - Sebastien Godard (sysstat <at> wanadoo.fr)
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x216c]
* Option -d added to pidstat: This option reports I/O statistics
for individual tasks.
* Option -C added to sadc: This option enables the user to insert
a timestamped comment in the binary data file.
* Option -C added to sar: This option tells sar to display
comments inserted in the binary data file by sadc.
* sadf updated to display comments.
* Fixed a bug that could happen while reading /proc/interrupts,
where irq numbers can now be 4 digits long in recent kernels.
* Fixed a possible buffer overflow in ioconf.c.
* Makefile updated: Remove previous manual pages before installing
new ones.
* pidstat, sar and sadc manual pages updated.
* Sysstat DTD file updated.
* Fixed DTD version in sadf.h.
* NLS updated.
* CREDITS file updated.
2007/04/29: Version 7.1.4 - Sebastien Godard (sysstat <at> wanadoo.fr)
* Addition of a new command "pidstat" aimed at displaying
per-process statistics.
* Option -N added to iostat. This option enables the user to
query any device-mapper devices for their registered device name
[bugzilla #177540].
* Fixed a small memory leak in readp_uptime() function.
* Typo fixed in configure.in file
(s+INIT_DIR/etc/rc.d/init.d+INIT_DIR=/etc/rc.d/init.d+).
* Stricter syntax checking for iostat.
* sar -dp now displays the device as "devM-N" (instead of "nodev")
when it can't find its real name in sysstat.ioconf file.
* iostat -t now also takes into account the value of environment
variable S_TIME_FORMAT.
* Manual pages now take into account variables defined by
"configure".
* isag now takes into account variables defined by "configure".
* "configure" now determines automatically whether workaround for
SMP race is needed. This workaround is for SMP kernels 2.2.x with
x <= 15 only.
* pidstat manual page added. Other manual pages updated.
* Makefile updated.
* NLS updated.
* FAQ updated.
* Code cleaned again and again...
* Removed sargon from contrib directory since its features are
now included in sysstat by default.
2007/03/27: Version 7.1.3 - Sebastien Godard (sysstat <at> wanadoo.fr)
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x216b]
* Hotplug CPU support: Fixed a bug that happened when sar tried
to read a datafile created while a least one processor was
disabled.
* Better support for keeping sar logfiles for more than one month
(several bugs fixed in sa1 and sa2 scripts).
* Fixed a small bug in sa2 script, where obsolete log files would not
be deleted if system activity directory was a symbolic link to
some other directory.
* The new variable "conf_dir" now enables the user to specify sysstat
configuration directory. This variable is used by "configure".
* Added option "--enable-compress-manpg" to "configure" to enable the
user to compress manual pages during installation.
* Removed some 'packed' attributes in sa.h and iostat.h that
generated warnings with gcc 4.1.1.
* isag (Interactive System Activity Grapher) improved.
* CREDITS file updated.
* Code cleaned.
2007/03/04: Version 7.1.2 - Sebastien Godard (sysstat <at> wanadoo.fr)
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x216a]
* Better hotplug CPU support. Now sysstat no longer assumes that
CPU#0 can never be disabled. It uses /proc/uptime file to
compute time interval.
* Various structures realignment to save memory (and disk space).
* Make sar -n display network traffic in kilobytes instead of bytes.
* Make sysstat compile cleanly with gcc 4.0.2.
* sysstat DTD file updated.
* NLS updated: Danish translation added.
* Manual pages updated.
* CREDITS file updated.
2007/02/21: Version 7.1.1 - Sebastien Godard (sysstat <at> wanadoo.fr)
* Autoconf support added.
* iconfig (Interactive Configuration script) added. iconfig is
a front-end to ./configure.
* spec file updated.
* FAQ updated.
* sadf manual page updated.
* CREDITS file updated.
2007/02/04: Version 7.0.4 - Sebastien Godard (sysstat <at> wanadoo.fr)
* Removed linux/major.h from list of files included in ioconf.c.
It was actually not used and also prevented sysstat from being
compiled on GNU/kFreeBSD.
* Sysstat scripts (sa1, sa2, sysstat) modified to enable the user
to keep sar data for more than one month.
* New parameter (COMPRESSAFTER) added to /etc/sysconfig/sysstat.
It gives the number of days after which sar datafiles must be
compressed to save disk space.
* Replaced the word "Device" with "Filesystem" for iostat
NFS report.
* iostat manual page updated.
* Makefile updated: don't use a static list of languages to
compile NLS files.
* "make install" now always install sysstat configuration file
(default location is /etc/sysconfig).
* FAQ updated.
* Added my email address when displaying sysstat version.
* NLS updated.
2006/12/03: Version 7.0.3 - Sebastien Godard (sysstat <at> wanadoo.fr)
* iostat NFS statistics added.
* iostat manual page updated.
* Columns "r/s" and "w/s" enlarged for iostat -x.
* Minor change so that sar -u may fit in 80 columns.
* NLS updated.
* CREDITS file updated.
2006/10/22: Version 7.0.2 - Sebastien Godard (sysstat <at> wanadoo.fr)
* Hotplug CPU support added to sar and mpstat
* Use /sys to count the number of available processors.
/proc/stat is used for that only if /sys is not found.
* sysstat DTD updated.
* sysstat spec file updated (gettext is now required).
* NLS updated: Swedish translation added.
* Manual pages updated.
* Makefile updated.
* CREDITS file updated.
2006/09/17: Version 7.0.1 - Sebastien Godard (sysstat <at> wanadoo.fr)
* Use now sysconf() function to get the size of a memory page
instead of using header file <asm/page.h>.
* The time specified with sadf options -s and -e is now always
considered as given in local time. sadf output is now really
consistent with that of sar.
* Fixed a bug in the SREALLOC() macro which was causing sar to
exit unexpectedly with this message: "realloc: Success".
* Try to better guess when a stats title line has to be displayed
by sar.
* Makefile updated (SMP_RACE definition was no longer taken into
account when compiling sadc).
* sysstat spec file updated.
* sar and sadf manual pages updated.
* FAQ updated.
* CREDITS file updated.
2006/07/09: Version 7.0.0 - Sebastien Godard (sysstat <at> wanadoo.fr)
* S_TIME_DEF_TIME environment variable added for sar, sadc and
sadf.
* Use now sysconf() function to get the number of clock ticks
per second (HZ value) instead of using kernel include file
<sys/param.h>.
* Columns "Device", "rrqm/s" and "wrqm/s" enlarged for iostat -x.
* sysstat installation process updated to use chkconfig if
available.
* Manual pages updated.
* Makefile updated.
* sysstat web site address updated.
* Code cleaned.
* CREDITS file updated.
2006/05/24: Version 6.1.3 - Sebastien Godard (sysstat <at> wanadoo.fr)
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x2169]
* Option -P can now be used with sar even on SMP machines where
only one processor is available.
* Small bug fixed for mpstat, where explicitly specifying
processor 0 ("-P 0") could lead to incorrect output on UP
machines.
* Option -D added to sadf: this option displays the contents of
a data file in a database-friendly format with a timestamp
expressed in seconds from the epoch.
* sadf manual page updated.
* NLS updated.
* CREDITS file updated.
2006/04/23: Version 6.1.2 - Sebastien Godard (sysstat <at> wanadoo.fr)
* Fix incorrect NFS client and server statistics for sar.
* sar can now display stats for newly created processes when
option -x ALL or -X ALL is used.
* iostat -x was displaying redundant information. It now
displays amount of data read from or written to devices in
sectors, kilobytes or megabytes depending on the switch used.
* isag updated to keep up with current sar version.
* sar and mpstat manual pages updated.
* FAQ updated.
2006/02/22: Version 6.1.1 - Sebastien Godard (sysstat <at> wanadoo.fr)
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x2168]
* New field added to sar: %steal.
* The size of a long integer in now saved in the header of the
data file created by sar. This size can be displayed with
sadf -H.
* Replaced the keyword "FULL" by the keyword "ALL" for sar -n
to be consistent with remaining options.
* Makefile updated (use implicit rules).
* sar manual page updated.
* CREDITS and FAQ files updated.
2005/11/28: Version 6.0.2 - Sebastien Godard (sysstat <at> wanadoo.fr)
* New field added to mpstat and iostat: %steal.
* sar updated to take into account cpu steal time.
* Off-by-one error in ioc_conv which was corrupting device names
on 64-bit architecture [Debian bug #334305].
* Binary RPM package now installs a sample crontab in /etc/cron.d.
* Makefile updated (remove sysstat.cron.* during make clean -
new target added: sysstat.crond.sample).
* sar now checks exit code from dup2() system calls.
* Option -V now only displays sysstat version number.
* NLS updated.
* FAQ updated.
* Manual pages updated.
2005/06/25: Version 6.0.1 - Sebastien Godard (sysstat <at> wanadoo.fr)
* Fixed a memory leak in ioconf parsing functions used by sar
and iostat.
* sar now displays its statistics to STDOUT in addition to saving
them into the file when option -o has been entered on the
command line.
* sar now recalculates number of system items (network interfaces,
disks, serial lines, etc.) when a file rotation happens.
* Make sar -b work again when used without option -d.
* Small changes so that sysstat can be compiled with gcc-4.0.1.
* sysstat updated so that it may be installed on Slackware.
* sar manual page updated.
* CREDITS file updated.
* Code cleaned.
2005/05/14: Version 6.0.0 - Sebastien Godard (sysstat <at> wanadoo.fr)
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x2167]
* Additional fields added to sar -y (TTY statistics). sar, sadf
and DTD updated.
* sar -d now only reports for used devices (devices with non zero
statistics).
* Stricter sadf syntax checking: various output formats are now
mutually exclusive.
* Stricter iostat syntax checking: -k and -m options are now
mutually exclusive.
* iostat: option -m is now taken into account even when
displaying extended statistics.
* Fixed a bug that prevented iostat from displaying stats about
devices that were unknown in sysstat.ioconf file.
* iostat might display bogus sectors values when the corresponding
kernel counters had overflown. This is now fixed.
* "sadf datafile -- -A" should also display individual interrupts
if available in datafile.
* Fixed a bug that prevented sar -x from displaying stats about a
process if it was after the first 256 processes in the process
list.
* Manual pages updated.
* sa1 script always uses option -d in crontab.
* sysstat.ioconf device configuration file updated.
* NLS updated.
* FAQ and CREDITS files updated.
* Code cleaned.
2005/02/25: Version 5.1.5 - Sebastien Godard (sysstat <at> wanadoo.fr)
* -x option added to sadf: it is now able to display the contents of
a sar datafile in XML. The corresponding DTD (Document Type
Definition) is included in the sysstat package.
* Small code change so that sysstat may be compiled with gcc-4.0.
* A few typos fixed in formulas used by sadf to display stats
on machines where HZ<>100 (typos appeared in sysstat 5.1.4).
* Fixed a bug in the stats displayed by sar -d.
* Removed a false workaround in iostat: better show that the kernel
is buggy rather than display a value that seems correct but which
is actually not...
* Fixed sar -i option which might not select records at the specified
interval on machines with multiple processors.
* NLS updated and cleaned. Do no longer translate fields names (sar,
iostat, etc.). Changed nb_NO.po and nn_NO.po files to nb.po and
nn.po.
* Bug fixed in spec file: when installing sysstat i586 RPM package,
sa1 and sa2 scripts were pointing to the wrong sadc location.
* Now sar and sadc display the magic number when they meet an
invalid system activity file.
* sadf manual page updated.
* sysstat RPM spec file is now included in source package.
* Code cleaned.
* FAQ, Makefile and CREDITS files updated.
2005/01/02: Version 5.1.4 - Sebastien Godard (sysstat <at> wanadoo.fr)
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x2166]
* NFS client and server statistics added to sar.
* sar -d now only reads stats for devices (and not partitions)
from /proc/partitions. (This is what it was already doing with
/proc/diskstats).
* Display routines from sadf merged, so that -ppc and -db
always output the same values.
* sadf updated to handle NFS statistics.
* sadf can now display the header of a data file (option -H).
* Define MAX_BLKDEV in ioconf.h if non-existent in <linux/major.h>.
* sar now looks for sadc in one directory only, specified at
compile time. Moreover it is now possible to have two different
sysstat versions installed: sar knows where its sadc counterpart
is located.
* sapath.in removed. SADC_PATH is defined in CONFIG file.
* sar and sadf manual pages updated.
* sysstat.ioconf file updated.
* Fixed a bug in i386 RPM package, where sadc location was not
consistent with that of sar. Spec file updated.
* Makefile updated.
* NLS updated.
* Various cosmetic changes (code and manual pages). Code cleaned.
* FAQ and CREDITS files updated.
2004/11/22: Version 5.1.3 - Sebastien Godard (sysstat <at> wanadoo.fr)
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x2165]
* Option -p added to sar: It enables sar (and also sadf) to
display device names as they appear in /dev.
* sysstat.ioconf support added.
* New fields added to sar -d (more disk activities displayed):
avgrq-sz, avgqu-sz, await, svctm, %util.
* sadf updated to handle new disk activities.
* I/O and transfer rate statistics as displayed by sar -b are
available whatever the version of the kernel is (i.e. even on
recent kernels).
* Disk stats are read by sadc from /proc/stat only if they cannot
be read from /proc/{partitions,diskstats}.
* sadc: Some variables declarations moved around.
* sar manual page updated.
* Added workaround for EMC PowerPath driver bug to enable iostat
to display proper device name.
* Makefile updated: Use $@ and $< everywhere; 'make {iostat,mpstat}'
work again; Create object files before linking; Removed unused
IOS_DFLAGS variable; Use DESTDIR variable everywhere; Create
libsysioc.a; Install sysstat.ioconf.
* NLS updated.
* README and CREDITS files updated.
2004/11/05: Version 5.1.2 - Sebastien Godard (sysstat <at> wanadoo.fr)
* sar -d now also uses /proc/partitions to get its data.
From now on sar -d looks in the following files in that order:
/proc/diskstats, /proc/partitions, /proc/stat.
* sadc writes disks data to file only if -d option is explicitly
set on the command line.
* sadc now reads individual interrupts data from /proc/stat only
if -I option was entered on the command line.
* 'sar -A' is now equivalent to 'sar -bBcdqrRuvwWy -I SUM -I XALL
-n FULL -P ALL' (i.e. individual interrupts are also included
in activities).
* Option -m now tells iostat to display statistics in megabytes
per second instead of blocks per second.
* Make history (number of days to keep log files) configurable
in /etc/sysconfig/sysstat file, which is used by sa2 script.
* Now use Vixie cron to launch sadc when possible.
* sadc, sa1 and sa2 may now be installed in another directory
than ${PREFIX}/lib/sa. This is useful on 64-bit systems where
the proper directory should be ${PREFIX}/lib64/sa.
* When uninstalling sysstat, always delete sysstat script,
config file and links in /etc tree. Also always delete
Vixie cron entry.
* sysstat script now returns real exit code.
* sar/sadc: Stricter syntax checking for -x and -X options use.
* sysstat "*.sh" files renamed in "*.in".
* Makefile updated.
* sadc and sar manual pages updated.
* NLS updated.
* FAQ updated.
* CREDITS and README files updated.
2004/10/09: Version 5.1.1 - Sebastien Godard (sysstat <at> wanadoo.fr)
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x2164]
* sar now reads CPU data, number of context switches, number
of sectors and total number of interrupts as 64-bit unsigned
values. It also reads the number of running processes as
unsigned long instead of unsigned int.
* sadf - System activity data formatter command added.
* Options -h and -H removed from sar. "sar -h" is replaced by
"sadf -p", and "sar -H" is replaced by "sadf -d". Read sadf
manual page, as its syntax is a bit different from that of sar.
* Common code for sar and sadf moved to sa_common.c file.
* pid_stats members don't need to be aligned since these stats
are not written to daily data files. Packing them saves some
memory on 32-bit architectures.
* No longer indicate that -x and -X are possible options for sadc.
They are only useful when used as options for sar, not sadc.
* Minor buffer overrun fixed in iostat.
* Updated CPU header for iostat and mpstat: CPU used while executing
at the system level is displayed as '%system' by iostat (like sar)
and as '%sys' by mpstat.
* sadf manual page added. Other manual pages updated.
* Updated the GPL notices (the address of the FSF was wrong).
* Makefile updated.
* NLS updated.
* README, FAQ and CREDITS files updated.
2004/08/09: Version 5.0.6 - Sebastien Godard (sysstat <at> wanadoo.fr)
* The value for file-sz reported by sar -v was a number of free
handles, and not a number of used ones! This is now fixed (and
this is really now a number of _used_ file handles).
* Now ask during config stage for the directory where sadc will
be located. This may be useful for some systems where sadc
needs to be installed in a specific location (e.g. on 64 bit
s390 systems, the proper directory should be /usr/lib64/sa).
* sa1 script updated: Use '-' to specify current daily data file
instead of guessing its name using current date.
* NLS updated: be consistent with GNU gettext standards.
* iostat manual page updated.
* FAQ updated.
* Makefile updated.
* CREDITS file updated.
2004/06/08: Version 5.0.5 - Sebastien Godard (sysstat <at> wanadoo.fr)
* Timestamp is no longer limited to 11 characters. This should
avoid problems with somes locales (for example Japanese locale,
where 'mojibake' used to be displayed by sar and mpstat sometimes).
* Fixed a bug in sysstat RPM spec file (symlinks to sysstat
script were wrong in /etc/rc.d directories).
* sar now checks parameters for options -n, -s and -e more
aggressively.
* NLS updated: Japanese translation added.
* Various typos fixed in several files (manual pages, README, etc.)
* CREDITS file updated.
2004/05/20: Version 5.0.4 - Sebastien Godard (sysstat <at> wanadoo.fr)
* When trying to lock file, sadc now checks for both EWOULDBLOCK
and EAGAIN error codes to be portable.
* sar could sometimes display a line whose time stamp was greater
than the limit set by -e option. This is no longer possible.
* The sadc command in sysstat.sh script had to be enclosed in
quotes to work when called via 'su -c'.
* The sysstat.sh script was sending the output of sadc command
to stdout instead of the standard system activity file. This
is now fixed.
* Outfile must now be explicitly set to "-" for sadc to use the
standard system activity file.
* FAQ updated.
* iostat manual page updated. Typo fixed in sadc manual page.
* Fixed the "Save picture" option of isag script.
2004/04/07: Version 5.0.3 - Sebastien Godard (sysstat <at> wanadoo.fr)
* iostat now reads the number of sectors in /proc/diskstats or
from sysfs as 64-bit unsigned values.
* iostat and mpstat now read CPU data and the number of
interrupts in /proc/stat as 64-bit unsigned values.
* sar uses "%u" instead of "%d" to read unsigned integer
values _everywhere_.
* sar and sadc are now a little bit more verbose when dealing
with invalid activity files.
* Network interface name size is now read from include file
<net/if.h>.
* FAQ polished up.
* Slovak translation added. NLS updated.
* Typo fixed in iostat manual page.
* Makefile and CREDITS file updated.
* isag upgraded to version 1.26 (isag package release 0.81.0).
2004/03/10: Version 5.0.2 - Sebastien Godard (sysstat <at> wanadoo.fr)
* iostat will _again_ look for statistics in /proc/partitions if
available. Too many production servers are still using 2.2.x or
2.4.x kernels and iostat must be able to display extended stats
also for them (/proc/partitions support was removed in sysstat
version 4.1.3). So now, iostat gets its statistics from the
following sources in that order: /proc/diskstats, sysfs,
/proc/partitions and then /proc/stat.
* statistics are now read by iostat and mpstat as unsigned long
instead of int to avoid integer overflow.
* iostat should now handle properly the case when the 'weighted
number of milliseconds spent doing I/Os' (read in sysfs or
/proc/{partitions,diskstats}) decreases with time.
* iostat manual page updated.
* Minor temporary file vulnerability fixed in isag command.
* README, FAQ and CREDITS files updated.
* Author's email changed.
2004/02/02: Version 5.0.1 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* -L option added to sadc. Enable sadc to lock its output file
to prevent multiple instances from writing to it at once.
* sa1 and sysstat scripts updated to take advantage of -L option.
* Handle the case where, under very special circumstances, STDOUT
may become unavailable, and sar, iostat and mpstat are no longer
able to display anything.
* sadc as called in sysstat script also uses -F option to force
the creation of daily data file.
* sar, sadc and mpstat manual pages updated.
* Code cleaned.
* FAQ and CREDITS files updated.
2003/11/09: Version 5.0.0 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* New fields added to mpstat: %irq (%time spent servicing
interrupts) and %soft (%time spent servicing softirqs).
* sar and iostat updated to take into account time spent servicing
interrupts and softirqs when displaying percentage of time
in system mode.
* By default iostat now displays only statistics information for
devices that are used by the system. You should now use the ALL
keyword to tell iostat to display statistics for every device
including those that have never been used.
* The file version.h is now dynamically created. sysstat's version
number is now only recorded in the Makefile.
* sar manual page updated: beginning with kernels 2.4 and later,
pgpgin and pgpgout statistics are in kilobytes and not in
blocks (see linux-2.4/fs/proc/proc_misc.c and
linux-2.6/mm/page_alloc.c).
* iostat and mpstat manual pages updated.
* Makefile updated: don't process NLS files if they are up-to-date.
* sysstat's RPM spec file updated to enable clean, non-root builds.
* NLS updated.
* FAQ and CREDITS files updated.
2003/09/28: Version 4.1.7 - Sebastien Godard <sebastien.godard@wanadoo.fr>
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x2163]
* /proc/diskstats is now the preferred source for iostat to get its
statistics. If non-existent, iostat falls back on sysfs then
on /proc/stat.
* In addition to devices, partitions can also be entered on the
command line for iostat providing that option -x is not used.
* /dev prefix has been removed from device name displayed by iostat -x.
* sar -d now looks for disks statistics in /proc/diskstats with
post 2.5 kernels.
* sar uses /proc/vmstat file with post 2.5 kernels to find paging
and swapping statistics.
* activepg, inadtypg, inaclnpg and inatarpg stats removed from
sar -B report (they were not really useful).
* sar -B now displays the number of page faults made by the system
(pgfault/s and pgmajflt/s).
* Stat on shared memory removed from sar -r and sar -R (this stat
was no longer maintained by the kernel since 2.4 because of
performance problems).
* Cached swap statistic information added to sar -r.
* sar -d now displays separate statistics for sectors that are
read from or written to devices.
* %file-sz (percentage of used file handles) is no longer displayed
by sar -v, since the upper limit for the number of open files
will self-scale with 2.6 kernels.
* sar now looks more aggressively for network devices in /proc/net/dev.
* Heading spaces in network interface names removed (sar -n).
* Fixed a problem reading /proc/interrupts when there are a lot
of CPUs (mpstat, sadc).
* NR_IRQS value increased to 256, since IA64 supports 256 irqs
per CPU.
* Some stats counters are now read as unsigned long instead of
unsigned int (pgpgin, pgpgout, pswpin, pswpout, irq_sum).
* sar and iostat manual pages updated.
* FAQ, README and CREDITS files updated.
* NLS updated.
2003/08/20: Version 4.1.6 - Sebastien Godard <sebastien.godard@wanadoo.fr>
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! [0x2162]
* Machine uptime calculation is now optimized on SMP machines
to minimize the consequences if an overflow condition happens.
Especially useful when asking for stats since system boot.
* -F option added to sadc. Useful to force the creation of the
daily data file: an already existing file with a wrong format
will be truncated by sadc if this option is used.
* sa1 script now calls sadc with -F option.
* The processor number to which the process is attached was no
longer displayed by sar -x. Make it appear again.
* CPU usage for processes, as displayed by sar -x and sar -X, should
now be correct on machines where HZ <> 100 (e.g. IA64 architecture).
* iostat still assumed that jiffies were 100ths of a second in some
places. Now use Linux HZ definition *everywhere*.
* The average I/O requests queue length as displayed by iostat -x was
wrongly calculated. This is now fixed.
* Manual pages updated.
* NLS updated.
* Cosmetic changes in various parts of the code.
* FAQ, README and CREDITS files updated.
2003/07/21: Version 4.1.5 - Sebastien Godard <sebastien.godard@wanadoo.fr>
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! Delete existing data files
in /var/log/sa directory! [0x2161]
* 'sar -x <pid>' and 'sar -X <pid>' work again.
* sar had a longstanding bug that prevented option -P from
working properly if the machine had more than 32 processors.
This is now fixed.
* Fixed a bug introduced in 4.1.2, which made some LINUX RESTART
messages to not be displayed by sar.
* sar now uses bitmap of char instead of int to avoid endianness
problems.
* sar can now handle a huge number of processors, serial lines and
network interfaces.
* FAQ updated.
2003/07/01: Version 4.1.4 - Sebastien Godard <sebastien.godard@wanadoo.fr>
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! Delete existing data files
in /var/log/sa directory! [0x2160]
* Fixed the way overflow conditions were handled by sar for
interfaces counters.
* On really big machines with 100 GB of memory or more, the values
read by sadc in /proc/meminfo would get truncated and cause havoc
in the calculations. This is now fixed.
* iostat and sar can now read many more disk entries in /proc/stat if
necessary.
* Option "-x SUM" removed for sar. It was used to tell sar to display
the total number of minor and major faults made by the system.
Unfortunately, the calculation was tricky, and the results were
uncertain...
* NLS updated. Polish translation added. Also proper charset and
encoding declarations added to fix msgfmt warnings and allow
gettext to recode between various charsets (e.g. German
translation will be shown properly both with
LANG=de_DE.ISO-8859-1, and LANG=de_DE.UTF-8)
* Code 'sanitization'.
* Manual pages updated.
* README and FAQ files updated.
2003/05/08: Version 4.1.3 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* iostat should now be fully 2.5/2.6 kernel compliant.
* Disks arrays in iostat are now dynamically sized.
* iostat: sysfs is now used in preference to /proc/stat if available.
* iostat will no longer look for statistics in /proc/partitions.
sysfs filesystem must now be available for iostat to get its
extended stats (post 2.5 kernels).
* iostat: Devices for which statistics are requested can now be entered
on the command line even if option -x is not used.
* Usage messages updated.
* Manual pages updated.
* Code cleaned (dk_drive_sum removed in iostat, long lines folded,
functions split in smaller parts, etc.)
* NLS updated. Romanian translation added.
* isag upgraded to version 1.22.
2003/01/24: Version 4.1.2 - Sebastien Godard <sebastien.godard@wanadoo.fr>
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! Delete existing data files
in /var/log/sa directory! [0x215f]
* sar -q now also displays load average for the past 15 minutes.
* -P option added to sar. This option enables sar to display
stats on a per processor basis. Options -U and '-I PROC' are
deprecated. 'sar -U ALL' is replaced by 'sar -u -P ALL', and
'sar -I PROC' by 'sar -I SUM -P ALL'.
* Fixed iowait value displayed by sar on SMP machines with pre 2.5
kernels.
* When displaying CPU utilization on SMP machines, sar now
recalculates the interval based on current CPU's tick count.
* Always check that the number of CPUs has not increased when
reading /proc/stat (sadc, mpstat).
* sadc: Don't assume that the first line in /proc/net/sockstat
concerns sockets. Check it!
* Serial lines are ignored by sadc for every kind of kernels
(UP, SMP...) if SMP_RACE is defined.
SMP_RACE is no longer defined by default in RPM packages.
* Code cleaned: Dead code removed in iostat.c, some lines longer
than 80 chars folded, etc.
* sar manual page updated.
* FAQ updated.
* NLS updated.
2003/01/02: Version 4.1.1 - Sebastien Godard <sebastien.godard@wanadoo.fr>
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! Delete existing data files
in /var/log/sa directory! [0x215e]
* sar -u/-U, iostat and mpstat can now display time spent in
I/O wait mode (with 2.5 kernels and above).
* Values like -1 and -2 are no longer aliases for keywords
ALL and XALL (sar -U, sar -I, mpstat -P).
* Buglet fixed in iostat.h.
* LC_CTYPE needs to be set, or it will emit messages with ?????? only
on some locales, especially ja_JP.eucJP
* sar, mpstat and iostat manual pages updated.
* NLS updated.
* CREDITS file updated.
* Typo removed in FAQ file.
2002/11/13: Version 4.0.7 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* Make data for timestamp 00:00:00 appear in one of the daily data
files when sar/sadc rotates its output file.
* Take out check for non SMP configuration when asking for
mpstat -P.
* sargon script updated.
* FAQ updated.
2002/08/04: Version 4.0.6 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* mpstat now uses a bitmap of char instead of int to avoid endianness
problems. As a consequence, mpstat should now work on PowerMac
architectures.
* CPU activity as displayed by mpstat -P for a given processor was
in a wrong range on SMP machines (e.g. 0-50% for a dual processor
box).
* Missing bitmap initialization fixed in mpstat.c.
* Configuration script updated.
* FAQ updated.
2002/05/12: Version 4.0.5 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* Average wait times and service times as displayed by iostat -x
were wrong by a factor of 10. This is now fixed.
* Linux RESTART messages must now be in the interval specified by
-s/-e options to be displayed by sar.
* Fixed a small bug that affected the timestamp for RESTART messages
displayed by sar -h when option -t was used.
* sar -H now displays its data in local time instead of UTC when
option -t is used.
* sargon shell script added.
* Created a contrib directory, including sargon and isag commands.
* NLS updated.
* FAQ updated.
* Makefile updated.
* sar manual page updated.
2002/04/07: Version 4.0.4 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* iostat is now able to display I/O activity in kB/s with 2.4.x
kernels (option -k).
* Fixed a typo in 'sar -W -h' output.
* Try to handle the case when some parameters in /proc/net/dev
may overflow ULONG_MAX.
* 'sar -d' now displays sectors per second instead of blocks
per second.
* iostat and sar manual pages updated.
* Added a FAQ.
* NLS updated: Russian translation added.
2002/01/27: Version 4.0.3 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* iostat now displays statistics in kB/s when option -x is used.
* Configuration script updated.
* sar and iostat manual pages updated.
* umask also set in sa1 shell script.
* Various sanity checks added.
* Fixed potential segmentation faults that could happen with some
locales.
* KB (standing for kilobytes) replaced with kB in various places.
* NLS updated: Italian translation added.
2001/09/22: Version 4.0.2 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* CPU usage, as displayed by iostat, mpstat and sar, should now
be OK on machines where HZ <> 100 (e.g. IA64 architecture).
* MAX_PART constant set to 256 in iostat.h.
* "-H" database friendly option added to sar.
* Better disks and network interfaces management (both may be
registered dynamically).
* Made options "-s" and "-e" work when option "-h" is used.
* isag upgraded to version 1.17.
* isag installation is now optional and can be chosen at config stage.
* Now try to install man pages in ${PREFIX}/share/man instead of
${PREFIX}/man.
* sa2 shell script updated.
* Configuration script updated.
* sar manual page updated.
* NLS updated: Norwegian translation added.
2001/06/24: Version 4.0.1 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* Files created by sa2 shell script were world writable. This is
now fixed.
* sa2.sh shell script updated: only remove sa?? and sar?? files.
* Don't use PAGE_SHIFT since it no longer necessarily exists in
<asm/page.h>. Compute it using page size instead.
* Cosmetic changes for iostat.
* NLS updated: Afrikaans translation added.
2001/04/08: Version 4.0.0 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* Better network interfaces handling. Now take into account the
fact that they may be registered/unregistered dynamically.
* Changed formula used to display statistics in order to avoid
overflow conditions.
* Fixed a bug in iostat, where the %util value scaled incorrectly.
* Better long file names management by iostat.
* mpstat and sar no longer periodically display the title line when
stdout has been redirected to a pipe or a file.
* sa2.sh shell script updated: Now exec sadc.
* Configuration script updated.
* NLS updated.
* Makefile updated.
* Manual pages updated.
* isag command updated.
2001/03/04: Version 3.3.6 - Sebastien Godard <sebastien.godard@wanadoo.fr>
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! Delete existing data files
in /var/log/sa directory! [0x215d]
* New paging statistics added (sar -B). Kernel 2.4 only.
* Load averages and queue length statistics added (option -q for sar).
* Per device statistics added (option -d for sar). Kernel 2.4 only.
* Better accuracy when computing average for some statistics.
* Display all the contents of a daily data file when the count
parameter is not given on the command line.
* Check sar command line options more aggressively.
* iostat no longer freezes if -c and -d options are used together.
* Fixed a bug that prevented iostat from displaying more than an
average of three devices with 2.4 kernels (a buffer was too small).
* Check added to ensure that sar and sadc commands are consistent.
* sar manual page updated.
* NLS updated.
* Code cleaned (use smaller subroutines).
* Makefile updated.
* isag command updates.
2001/02/11: Version 3.3.5 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* iostat command improved. Take now full advantage of Stephen
Tweedie's I/O accounting patch to display extended statistics
(option -x).
* The default value for the count parameter of the sar command is
now 1 (this is how sar works with other Un*xes...). A value of
0 will indicate that reports are to be generated continuously.
* Code cleaned: Now always use 'double' numbers instead of the
INT_PART, INT_VAL, DEC_PART and DEC_VAL macros.
* Don't assume that jiffies are 100ths of a second. Use Linux
HZ definition instead.
* NLS updated (small fix).
* sar and iostat manual pages updated.
* isag (Interactive System Activity Graph) command added.
* Makefile updated.
2001/01/26: Version 3.3.4 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* Disk I/O statistics for the last device were counted twice when
reading /proc/stat file with 2.4 kernels (sar -b). This is now
fixed.
* iostat command is no longer able to save its data to a file.
In fact, iostat has never been supposed to work that way, and I
have never really maintained this option.
* iostat now also works with 2.4 kernels. It can handle the format
of the /proc/stat file for both 2.2 and 2.4 kernels.
* sar now reports statistics on allocated disk quotas entries
instead of on used ones (sar -v).
* Manual pages updated for sar and iostat.
2000/12/31: Version 3.3.3 - Sebastien Godard <sebastien.godard@wanadoo.fr>
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one! Delete existing data files
in /var/log/sa directory!
* Disk usage displayed by iostat on SMP machines was wrong. This
is now fixed.
* iostat command cleaned: All the statistics not implemented in
the standard Linux kernel have been removed (tty, iowait...).
* sar can now handle I/O and transfer rate statistics with both
2.2.x and 2.4.x Linux kernels (-b option).
* Removed %inode-sz that was displayed by sar -v, since the file
inode-max in /proc/sys/fs no longer exists in Linux 2.4.
The new 2.4.x kernels now seem to be able to allocate inode
structures dynamically, and to free them when necessary (see
linux/fs/inode.c).
* Removed statistics on highest in-used sockets. Relevant
counters have disappeared from sockstat file in /proc/net
for 2.4 kernels (sar -n SOCK).
* Added statistics on IP datagram fragments (sar -n SOCK).
Only available for 2.4 kernels.
2000/11/19: Version 3.3.2 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* sar now saves timestamps in its daily data files both in UST
and in the user's timezone formats.
WARNING: Daily data files format has changed, and is *not*
compatible with the previous one!
* sar now displays timestamps in locale time when reading data
from its daily data files. -t option has been added to sar,
to enable it to display timestamps in the original locale
time of the data file creator.
* Size of various buffers made larger.
* Number of interrupts per second for 'all' CPU displayed by the
mpstat command was wrong. This is now fixed.
* Makefile updated.
* Usage message updated.
2000/09/17: Version 3.3.1 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* mpstat command added.
* Manual page added for mpstat.
* Option -h added, enabling sar to display data from a daily data
file in a format that can easily be handled with pattern
processing commands like awk.
* Manual page updated for sar.
* iostat now writes KB (for kilobytes) instead of Kb, which could
have been interpreted as kilobits...
* Disk accounting patch for iostat removed.
* NLS updated.
2000/08/06: Version 3.2.4 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* Fixed a bug that prevented sar from reading its daily data files
when they had been created using -I option.
* Network statistics averages were sometimes wrong when reading
data from a file. This is now fixed.
* README-patch file updated.
* Configuration script updated to deal with Debian directories.
2000/06/25: Version 3.2.3 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* Configuration scripts updated. Can now print a help message.
* Workaround for SMP race in Linux serial driver added.
This workaround is enabled by default in RPM binary packages.
* sar manual page updated.
* Added iostat disk accounting patch against 2.2.16 linux kernel.
* Removed a few typos in the comments of the source code.
2000/06/11: Version 3.2.2 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* Now handle interrupts per processor better. Output improved.
* Makefile modified to comply with redhat good packaging.
* sysstat initialization script updated (don't su to root when
we are already root).
* sar now looks for sadc data collector in more places.
* NLS is now enabled by default.
* Silly bug in iostat disk accounting patch fixed.
* Added iostat disk accounting patch against 2.2.15 linux kernel.
2000/04/02: Version 3.2 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* sadc no longer complains when daily data files have a null length.
* Configuration script added (make config).
* Statistics on sockets in use added.
* Got rid of various limits (maximum number of serial lines,
maximum number of network interfaces).
* Better management of dynamic files contents.
* Cosmetic change for timestamp display.
* Manual pages updated.
* Documentation added in ${PREFIX}/doc/sysstat-x.y.
2000/02/20: Version 3.1 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* Fixed a bug that made average numbers wrong for some statistics
when reading them from a system activity file.
* Fixed a bug that prevented the user from retrieving some
statistics when reading them from a system activity file.
* sadc no longer core-dumps on UP machines with SMP support enabled
in the kernel.
* System activity files are now readable by everybody.
* Average statistics since boot time are now printed when interval
parameter is set to 0. If interval and count parameters are not
set on the command line, sar selects requested activities from
the current system activity daily data file.
* sadc, sa1 and sa2 manual pages moved to chapter 8 instead of 1m.
* iostat disk accounting patch modified to work with md drivers.
2000/01/30: Version 3.0 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* sadc - system activity data collector added.
* sa1, sa2 and sysstat.sh shell scripts added.
* Manual pages added for sadc, sa1, sa2.
* sar heavily modified to use stats sent by sadc.
* System activity data file now records system restarts.
* Every records in the iostat and system activity data files have
their own timestamp now.
* sar and iostat largely modified to use structures when reading or
writing data files.
* Per-process statistics added.
* System minor and major fault statistics added.
* TTY device statistics added.
* Memory and swap space utilization statistics added.
* Per-processor interrupt statistics added.
* Statistics for kernel parameters (dcache, inodes, superblocks, etc.)
added.
* Network device statistics added.
* S_TIME_FORMAT environment variable added.
* Meaning of -i option has changed for sar.
* -d option removed for sar since it is no longer needed (we have
sadc now).
* sar now uses keywords such as ALL, SUM, etc. instead of numerical
parameters.
* iostat disk accounting patch improved.
* 'page' field in /proc/stat is no longer used by iostat (was
unreliable).
* Workaround for buggy RTC (or kernels?) added. Used when the number
of jiffies spent by the system in the idle task is decreasing in
/proc/stat.
* Manual pages updated.
* NLS updated: Portuguese translation added.
* Makefile updated.
1999/11/28: Version 2.2 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* Option -d added to sar to enable it to be started as a daemon.
* sar initialization script updated to use -d option.
* Option -V added to sar and iostat (print version number and usage).
* Fixed a bug that made CPU utilization displayed by iostat wrong on
SMP machines.
* Manual pages updated and moved to chapter 1 instead of 8.
* sar '-m' option renamed to '-r'.
* Display improved for iostat.
* NLS updated: Spanish translation added.
* Patch against kernel 2.2.13 added for iostat.
1999/10/24: Version 2.1 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* The sar and iostat commands can now work on non SMP-machines even
if the kernel is compiled with SMP support enabled.
* Fixed a bug that made the time displayed by iostat wrong when
reading stats back from a file.
* Added memory statistics: free/shared/buffer/cached pages (sar -m).
* Option -h added to sar to print its header periodically.
* Set unavailable fields to zero when writing iostat file.
* sar now displays 'proc/s' instead of 'fork/s' since exec'ed
processes are also taken into account.
* Manual pages updated.
* sysstat is now available in RPM format.
* Code cleaned up and made safer.
1999/09/19: Version 2.0 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* iostat now displays logical block I/O stats for each IDE device, or
global Kb/s rate for all the block devices. Stats in Kb/s for each
block device are not available for standard kernels due to Linux
poor disk accounting... Anyway a patch is provided in this version
of 'sysstat' in the 'patch' directory to fix that.
* System uptime is no longer read in /proc/uptime but computed from
the cpu line in /proc/stat.
* When stats are read from a file (option -f of iostat and sar),
values are now computed in accordance with the interval given by
the user on the command line.
* Old '-o' option for iostat removed. Now iostat can save data
into a file in a binary format and re-read them later (options
'-o' and '-f') in the same way sar does.
* Number of available processors now taken into account when
retrieving CPU usage from /proc/stat.
* Removed a bug that prevented 'sar -U' to work on SMP machines.
* Fixed a bug that made per-CPU average usage wrong on SMP machines.
* Use of option -U is now possible for sar when reading from a file
even if the machine is not an SMP one.
* Fixed a bug that prevented sar from re-reading stats saved in a file
when -I or -U option had been used.
* iostat modified to work on SMP machines.
* Changed the formula used to display stats in order not to get
numbers greater than UINT_MAX.
* System name, release number and hostname are now saved in
system activity files.
* iostat now displays system name, release number and hostname
when invoked.
* Daily system activity file rotation added for sar.
* Improved 64-bit system support.
* CREDITS file added.
* NLS updated: German translation added.
* Manual pages updated.
* Makefile updated: Do not call msgfmt if NLS is not enabled.
1999/06/25: Version 1.2 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* Better NLS support (date, time and numerical values, NLS enabled
for sar, etc.).
* System activity daily file structure changed: Is now independent of
the locale and is more compact.
* sar updated to support SMP machines (per CPU accounting).
* Code cleaned, man pages updated...
1999/05/28: Version 1.1 - Sebastien Godard <sebastien.godard@wanadoo.fr>
* NLS support added. French translation started but needs to be
completed.
* sar updated to support more than 16 interrupts (potential APIC
interrupt sources).
* A few typos removed (man pages, etc.).
* Author email address updated :-)
* Tested on kernel 2.2.5.
1999/03/06: Version 1.0 - Sebastien Godard <sebastien.godard@gazdefrance.com>
* Initial Revision. Tested on kernel 2.0.36.