Re: Puzzling full database lock

From: Christopher Opena <counterveil(at)gmail(dot)com>
To: Alan Hodgson <ahodgson(at)simkin(dot)ca>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Puzzling full database lock
Date: 2012-02-02 05:56:16
Message-ID: CAFOrgqfZTC+BQ_zXMLV6NvkwEiLp7Qf2PGx98XjZijbHsiqLbg@mail.gmail.com
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Yeah, it's strange because we definitely have periods of high iowait but
this is not when the locks are happening. If I could correlate it directly
to that it would be so much easier. Thanks again for the response!

On Wed, Feb 1, 2012 at 8:42 PM, Alan Hodgson <ahodgson(at)simkin(dot)ca> wrote:

> On Wednesday, February 01, 2012 05:13:15 PM Christopher Opena wrote:
> > Do you mean 6-12% of total iowait, or per cpu? Our average iowait in the
> > last week is 34.31% of a total 1600% with an average idle of 1451.76%.
> Our
> > iowait *does* spike occasionally (today it went up to 148.01%) but it
> > doesn't coincide with the lock happening. At the time of the lock we
> were
> > at 10.58% iowait, which is quite a bit below our average.
> >
>
> Total, but it doesn't sound like that's the problem.
>
>

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