[CentOS] Resource utilisation of processes on linux server.
J Martin Rushton
martinrushton56 at btinternet.com
Sun Apr 14 16:08:37 UTC 2019
On 14/04/2019 16:51, Pete Biggs wrote:
>
>>
>> Thanks for the email. I will be interested in command line interface
>> tool/utility. Is there a way to find out the previous occurrence of
>> resource utilization? For example, there was a high load on the Linux
>> server which occurred three days back during the time of 3:00 AM to 4:00 AM
>> meaning historical data.
>>
>
> You need to look at system accounting. The command 'sa' reports on
> accounting information and the command 'accton' turns on per process
> accounting. It's not usually turned on by default (on busy systems the
> accounting files can get large) and it's not retrospective. (So if it's
> not turned on, any per-process logs are lost once the process
> terminates.)
>
> P.
>
>
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>
sa logs aren't usually too big, but the process logs can get pretty
large. sa logs are usually processed overnight to sar reports which are
a good starting point (see /var/log/sa). If you are running an audit
trail that may give you additional information, as would monitoring
tools such as Ganglia.
--
J Martin Rushton MBCS
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