changes

linux下查看系统工具原码,如IOSTAT等

Changes:

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,