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Re: High %SYS CPU usage

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: (view raw, whole thread or download thread mbox)
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.
> --
> Sent via pgsql-performance mailing list (pgsql-performance(at)postgresql(dot)org)
> To make changes to your subscription:

César Martín Pérez

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