From: Josh Berkus <josh@agliodbs.com>
To: pgsql-performance@postgresql.org
Subject: Re: High %SYS CPU usage
Date: Tue, 30 Oct 2012 12:07:37 -0700
Message-ID: <50902579.5090304@agliodbs.com> (raw)
In-Reply-To: <CAMAsR=5F45+kj+hw9q+zE7zo=Qc0yBEB1sLXCF0QL+dWt_7KqQ@mail.gmail.com>
References: <CAMAsR=5F45+kj+hw9q+zE7zo=Qc0yBEB1sLXCF0QL+dWt_7KqQ@mail.gmail.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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To: pgsql-performance@postgresql.org
Cc: josh@agliodbs.com
Subject: Re: High %SYS CPU usage
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