SA1(8)                       Linux User's Manual                      SA1(8)

NAME         top

       sa1 - Collect and store binary data in the system activity daily data

SYNOPSIS         top

       /usr/local/lib64/sa/sa1 [ --boot | interval count ]

DESCRIPTION         top

       The sa1 command is a shell procedure variant of the sadc command and
       handles all of the flags and parameters of that command. The sa1
       command collects and stores binary data in the current standard
       system activity daily data file.

       The standard system activity daily data file is named saDD unless
       sadc's option -D is used, in which case its name is saYYYYMMDD, where
       YYYY stands for the current year, MM for the current month and DD for
       the current day. By default it is located in the /var/log/sa

       The interval and count parameters specify that the record should be
       written count times at interval seconds. If no arguments are given to
       sa1 then a single record is written.

       The sa1 command is designed to be started automatically by the cron

OPTIONS         top

       --boot This option tells sa1 that the sadc command should be called
              without specifying the interval and count parameters in order
              to insert a dummy record, marking the time when the counters
              restart from 0.

EXAMPLE         top

       To collect data (including those from disks) every 10 minutes, place
       the following entry in your root crontab file:

       0,10,20,30,40,50 * * * * /usr/local/lib64/sa/sa1 1 1 -S DISK

FILES         top

              The standard system activity daily data files and their
              default location.  YYYY stands for the current year, MM for
              the current month and DD for the current day.

AUTHOR         top

       Sebastien Godard (sysstat <at>

SEE ALSO         top

       sar(1), sadc(8), sa2(8), sadf(1), sysstat(5) 

COLOPHON         top

       This page is part of the sysstat (sysstat performance monitoring
       tools) project.  Information about the project can be found at 
       ⟨⟩.  If you have a bug
       report for this manual page, send it to  This
       page was obtained from the project's upstream Git repository
       ⟨⟩ on 2019-11-19.  (At that
       time, the date of the most recent commit that was found in the repos‐
       itory was 2019-11-18.)  If you discover any rendering problems in
       this HTML version of the page, or you believe there is a better or
       more up-to-date source for the page, or you have corrections or
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       of the original manual page), send a mail to

Linux                             JULY 2018                           SA1(8)

Pages that refer to this page: sadf(1)sar(1)sysstat(5)sa2(8)sadc(8)