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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLE | FILES | AUTHOR | SEE ALSO | COLOPHON |
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SA1(8) Linux User's Manual SA1(8)
sa1 - Collect and store binary data in the system activity daily
data file.
/usr/local/lib64/sa/sa1 [ --boot | --rotate [ iso ] | --sleep |
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 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/sa 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.
--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).
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/local/lib64/sa/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/local/lib64/sa/sa1 --rotate
/var/log/sa/saDD
/var/log/sa/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.
Sebastien Godard (sysstat <at> orange.fr)
sar(1), sadc(8), sa2(8), sadf(1), sysstat(5)
https://github.com/sysstat/sysstat
https://sysstat.github.io/
This page is part of the sysstat (sysstat performance monitoring
tools) project. Information about the project can be found at
⟨http://sebastien.godard.pagesperso-orange.fr/⟩. If you have a bug
report for this manual page, send it to sysstat-AT-orange.fr.
This page was obtained from the project's upstream Git repository
⟨https://github.com/sysstat/sysstat.git⟩ on 2025-08-11. (At that
time, the date of the most recent commit that was found in the
repository was 2025-08-04.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
Linux AUGUST 2023 SA1(8)
Pages that refer to this page: sadf(1), sar(1), sysstat(5), sa2(8), sadc(8)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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