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sar(8)									sar(8)

NAME
       sar: sa1, sa2, sadc - System activity report package

SYNOPSIS
       /usr/opt/svr4/usr/lib/sa/sadc [tn] [file]

       /usr/opt/svr4/usr/lib/sa/sa1 [tn]

       /usr/opt/svr4/usr/lib/sa/sa2   [-Pprocessor-id]	[-ubdycaqvmpgrkA]  [-s
       time] [-e time] [-isec]

OPTIONS
       The options, -ubdycaqvmpgrkA, are the same as for sar; see  sar(1)  for
       further information.

OPERANDS
       Is the name of the file that will capture the report output.  Indicates
       the number of intervals during which sampling will take	place.	 Indi‐
       cates the duration in seconds for each sampling. The value for t should
       be 5 or greater.

DESCRIPTION
       The operating system contains counters for: CPU utilization Buffer  use
       Disk and tape I/O activity Terminal (TTY) activity System call activity
       File access activity Queue activity Inter-process communications Paging

       As these activities occur, the appropriate counters are incremented.

       A user can access system activity data through  the  sar	 utility.  The
       same information can be accessed automatically on a routine basis.

       The  system  activity  data collector, sadc, and two shell scripts, sa1
       and sa2, sample, save, and process this data. The  sa1  and  sa2	 shell
       scripts are variants of sadc.

       The  sadc  shell	 script samples system data n times, in intervals of t
       seconds between samples. It produces a report  to  standard  output  by
       default or in binary format to a specified file.

       If  the	sampling  interval t is 5 seconds or less, sadc's own activity
       may affect the sample.

       Omitting the t and n  parameters	 causes	 sadc  to  produce  a  special
       record.	This  is used at system boot time, when booting to a multiuser
       state, to mark the time when the counters restart from zero.

       The sa1 shell script collects and stores data in a  binary  file	 named
       /var/adm/sa/sadd, where dd is the current day of the month.

       The  arguments  t  and  n  specify  that sa1 record the data n times at
       intervals of t seconds. If omitted, the data is only written once.

       The  sa2	 shell	script	writes	a  daily  report  in  a	  file	 named
       /var/adm/sa/sardd. where dd is the current day of the month.

       You can use sa2 within a crontab.

EXAMPLES
       The  following  entry  in /sbin/init.d/perf writes  the restart mark to
       the daily data file.

	      su  sys  -c  "/usr/opt/svr4/usr/lib/sa/sadc  /var/adm/sa/sa`date
	      +%d`"  The  following  entry  in	/sbin/init.d/perf  writes  the
	      restart mark to the daily data file.

	      su  sys  -c  "/usr/opt/svr4/usr/lib/sa/sadc  /var/adm/sa/sa`date
	      +%d`"	The	following    example	shows	 entries    in
	      /var/spool/cron/crontabs/sys that produce records	 every	twenty
	      minutes	during	 working   hours  and  hourly  otherwise.  See
	      crontab(1) for details.

	       0 * *	* 0-6 /usr/opt/svr4/usr/lib/sa/sa1
	       20,40	8-17 * * 1-5 /usr/opt/svr4/usr/lib/sa/sa1

	      resulting	 display  The  following  example  shows  entries   in
	      /var/spool/cron/crontabs/sys  that reports all important activi‐
	      ties every twenty	 minutes  during  working  hours  from	Monday
	      through Friday. See crontab(1) for details.

		5   18	 *  *  1-5  /usr/opt/svr4/usr/lib/sa/sa2  -s  8:00  -e
	      18:01	-i 1200 -A

	      resulting display

FILES
       Daily data file.	 Daily report file.

SEE ALSO
       Commands: crontab(1), sar(1), timex(1)

									sar(8)
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