Re: Background writer memory bloat?

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От Tom Lane
Тема Re: Background writer memory bloat?
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Msg-id 18411.1154703628@sss.pgh.pa.us
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Ответ на Background writer memory bloat?  (Peter Eisentraut <peter_e@gmx.net>)
Ответы Re: Background writer memory bloat?  (Peter Eisentraut <peter_e@gmx.net>)
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Peter Eisentraut <peter_e@gmx.net> writes:
> I'm seeing a background writer process in an 8.0.8 installation that uses 1.6
> GB of main memory, and ps shows that it has used an unreasonable amount of
> CPU time so far.  It seems that the machine was under heavy load just before
> I got to it; maybe that is cause?  Has anyone seen this sort of memory bloat
> on the background writer process?

Are you sure it's bloat, and not just a reflection of the fact that it's
touched every page of the shared buffers over its lifespan?  Some OSes
(you did not say what this is) report a process' memory size as
including only those pages of shared memory it's touched.

            regards, tom lane

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