sa1(8) - 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 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/sysstat directory.

       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
              system 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 ac-
              tivity 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 fol-
       lowing 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)

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