SA1
Section: Linux User's Manual (8)
Updated: NOVEMBER 2020
Page Index
NAME
sa1 - Collect and store binary data in the system activity daily data file.
SYNOPSIS
/usr/lib64/sa/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/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.
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/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/lib64/sa/sa1 --rotate
FILES
/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.
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/