/usr/lib/sysstat/sa1 [ --boot | interval count ]
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 com-
mand 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
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
--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.
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
The Debian sysstat package has already placed such an entry in your
system crontab. Please refer to the /usr/share/doc/sys-
stat/README.Debian file for details.
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.
Sebastien Godard (sysstat <at> orange.fr)
sar(1), sadc(8), sa2(8), sadf(1), sysstat(5)
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