sa1 - Collect and store binary data in the system activity daily data file.
/usr/lib/sysstat/sa1 [ --boot | interval count ]
command is a shell procedure variant of the sadc
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
's option -D
is used, in which case its name is
, 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
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.
command is designed to be started automatically by the cron
- 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/sysstat/README.Debian
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)