Databases Reference
In-Depth Information
This will display the following result:
To retrieve a past CPU usage from the 21st day of the month, as a
wls
user execute the
following command:
[wls@prod01]$ sar -u -f /var/log/sa/sa21
This will display the following result:
The default SAR configuration keeps historical data for a week.
How it works...
The SAR utility is very flexible and provides a quick way to watch the host behavior for the
current day and for the past seven days. SAR runs every 10 minutes and saves a summary
at the end of the day.
These are the default values in the crontab and can be adjusted.
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