sa1(8) - man - phpMan

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



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


SYNOPSIS
       /usr/lib/sysstat/sa1 [ --boot | --rotate [ iso ] | --sleep | interval count ]


DESCRIPTION
       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  cur‐
       rent 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 cur‐
       rent  month  and DD for the current day. By default it is located in the /var/log/sysstat di‐
       rectory.

       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 command.


OPTIONS
       --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.

       --rotate [ iso ]
              Use this option to tell sa1 to insert a record of statistics to the standard saDD sys‐
              tem activity daily data file of the previous day.  This should be done  shortly  after
              midnight  (on day DD+1) in order to make sure that the data file covers the whole day,
              including the last interval of time just before  midnight.   Adding  the  iso  keyword
              tells sa1 to use saYYYYMMDD instead of saDD as the standard system activity daily data
              file name.

       --sleep
              This option tells sa1 that the sadc command should insert a  comment  indicating  that
              the system is entering or leaving sleep mode (i.e. system suspend or hibernation).


EXAMPLE
       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/lib/sysstat/sa1 1 1 -S DISK

       To rotate current system activity daily data file, ensuring it is complete, place the follow‐
       ing entry in your root crontab file:

       0 0 * * * /usr/lib/sysstat/sa1 --rotate


   Debian note
       The  Debian  sysstat package has already placed such an entry in your system crontab.  Please
       refer to the /usr/share/doc/sysstat/README.Debian file for details.


FILES
       /var/log/sysstat/saDD
       /var/log/sysstat/saYYYYMMDD
              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
       Sebastien Godard (sysstat <at> orange.fr)


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

       https://github.com/sysstat/sysstat
       http://pagesperso-orange.fr/sebastien.godard/



Linux                                       NOVEMBER 2020                                     SA1(8)