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Re: Stats collector on rampage (8.2.3)

From: Gaetano Mendola <mendola(at)bigfoot(dot)com>
To: "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Cc: Magnus Hagander <magnus(at)hagander(dot)net>
Subject: Re: Stats collector on rampage (8.2.3)
Date: 2007-10-29 10:02:13
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Lists: pgsql-hackers
Magnus Hagander wrote:
> Gaetano Mendola wrote:
>> hubert depesz lubaczewski wrote:
>>> On Mon, Oct 29, 2007 at 09:52:24AM +0100, Gaetano Mendola wrote:
>>>> it seems that the stats collector on my box is using more CPU than
>>>> it did in the past.
>>> it's well known bug, and it was fixed in 8.2.4:
>>> ...
>>> Prevent the statistics collector from writing to disk too frequently
>>> (Tom)
>>> ...
>> I saw that, upgrading the DB at this very moment is not doable, killing
>> that process will the postmaster respawn another one? BTW I discover that
>> it was triggered by the time change due the daylight saving.
> IIRC, it will. You need to change postgresql.conf and disable the stats
> collector. If you do that, it won't be started.
> Shouldn't be trigged by DST.

The high cpu usage started at that time, may be that is another problem of some
applications stuck on it. I will investigate further.


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