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/

Linux                                             NOVEMBER 2020                                           SA1(8)