From: | Cesar Martin <cmartinp(at)gmail(dot)com> |
---|---|
To: | Josh Berkus <josh(at)agliodbs(dot)com> |
Cc: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: High %SYS CPU usage |
Date: | 2012-11-02 07:47:42 |
Message-ID: | CAMAsR=4a5e5U7hqBs-EfNwCtbDjM4qGDE1JF=11nEfNVODAoXg@mail.gmail.com |
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Lists: | pgsql-performance |
Hi Josh,
Today is not the worse day for this issue, because Fridays DB have little
workload... But I have this output:
I don't have updated OS server from the install.
I also begin to think that the problem is OS misconfiguration (Kernel
parameters??) or Hardware problem...
Thanks for your help.
2012/10/30 Josh Berkus <josh(at)agliodbs(dot)com>
> Cesar,
>
> > On this server I have only one database with 312GB of data. The database
> > had run fine during 4 months, but from two months ago, during high work
> > load periods, the server is collapsed by "%sys" type load.
>
> Hmmm. Have you updated Linux any time recently? I'm wondering if this
> is a PostgreSQL problem at all. It sounds like an OS issue.
>
> Can you give us the results of mpstat -P ALL 3 ? The dstat output
> doesn't tell me much.
>
> --
> Josh Berkus
> PostgreSQL Experts Inc.
> http://pgexperts.com
>
>
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--
César Martín Pérez
cmartinp(at)gmail(dot)com
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