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sar(8)

System Administration Commands                                          sar(8)



NAME
       sar, sa1, sa2, sadc - system activity report package

SYNOPSIS
       /usr/lib/sa/sadc [t n] [ofile]


       /usr/lib/sa/sa1 [t n]


       /usr/lib/sa/sa2 [-aAbcdgkmpqruvwy] [-e time] [-f filename]
            [-i sec] [-s time]

DESCRIPTION
       System  activity  data can be accessed at the special request of a user
       (see sar(1)) and automatically, on a routine basis, as described  here.
       The  operating system contains several counters that are incremented as
       various system actions occur. These include counters for  CPU  utiliza‐
       tion,  buffer  usage,  disk and tape I/O activity, TTY device activity,
       switching and system-call activity, file-access, queue activity, inter-
       process communications, and paging. For more general system statistics,
       use sstore(1), iostat(8), sar(1), or vmstat(8).


       sadc and two shell procedures, sa1 and sa2, are used to  sample,  save,
       and process this data.


       sadc, the data collector, samples system data n times, with an interval
       of t seconds between samples, and writes in binary format to  ofile  or
       to  standard  output.  The sampling interval t should be greater than 5
       seconds; otherwise, the activity of sadc itself may affect the  sample.
       If  t and n are omitted, a special record is written. This facility can
       be used at system boot time, when booting to  a  multi-user  state,  to
       mark  the  time  at  which the counters restart from zero. For example,
       when accounting is enabled, the svc:/system/sar:default service  writes
       the restart mark to the daily data file using the command entry:

         su sys -c "/usr/lib/sa/sadc /var/adm/sa/sa`date +%d`"



       The  shell  script sa1, a variant of sadc, is used to collect and store
       data in the binary file /var/adm/sa/sadd, where dd is the current  day.
       The  arguments t and n cause records to be written n times at an inter‐
       val of t  seconds,  or  once  if  omitted.  The  following  entries  in
       /var/spool/cron/crontabs/sys will produce records every 20 minutes dur‐
       ing working hours and hourly otherwise:



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



       See crontab(1) for details.


       The shell script sa2, a variant of sar, writes a daily  report  in  the
       file /var/adm/sa/sardd. See the OPTIONS section in sar(1) for an expla‐
       nation   of   the   various   options.   The   following    entry    in
       /var/spool/cron/crontabs/sys  will  report  important activities hourly
       during the working day:



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


FILES
       /tmp/sa.adrfl

           address file


       /var/adm/sa/sadd

           daily data file


       /var/adm/sa/sardd

           daily report file


       /var/spool/cron/crontabs/sys

           used for performance collection


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE  TYPEAT‐
       TRIBUTE VALUE _ Availabilitysystem/accounting/legacy-accounting


SEE ALSO
       crontab(1),   sar(1),   sstore(1),  svcs(1),  timex(1),  attributes(7),
       smf(7), iostat(8), svcadm(8), sstored(8), vmstat(8)

NOTES
       The sar service is managed by the service management facility,  smf(7),
       under the service identifier:

         svc:/system/sar



       Administrative actions on this service, such as enabling, disabling, or
       requesting restart, can be performed  using  svcadm(8).  The  service's
       status can be queried using the svcs(1) command.


       Starting in the Oracle Solaris 11.4 release, the StatsStore is provided
       to record a wider array of statistics than sar and to view them in more
       ways,  including the System Web Interface. See the Using Oracle Solaris
       11.4 StatsStore and System Web Interface book for more information.



Oracle Solaris 11.4               14 Aug 2020                           sar(8)
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