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 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 following 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/