From: | Richard Huxton <dev(at)archonet(dot)com> |
---|---|
To: | paul(at)wayr(dot)org |
Cc: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: dedicated server & postgresql 8.1 conf tunning |
Date: | 2008-10-02 08:29:19 |
Message-ID: | 48E4865F.3010807@archonet.com |
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Thread: | |
Lists: | pgsql-performance |
paul(at)wayr(dot)org wrote:
> Thanks,
>
> Unfornatly, i can't update pgsql to 8.3 since it's not in debian stable.
That's why backports.org was invented :-)
Or does can't mean "not allowed to"?
> So i'm going to play with work_mem & shared_buffers.
>
> With big shared_buffers pgsql tells me
> shmget(cle=5432001, taille=11183431680, 03600).
> so i do "echo 13183431680 > /proc/sys/kernel/shmmax" ( 10Go + 2Go just
> in case)
>
> but pgsql tells me again that it there's not enought shm..
> How can i compute the go shmmax for my server ?
I'm not seeing anything terribly wrong there. Are you hitting a limit
with shmall?
Oh - and I'm not sure there's much point in having more shared-buffers
than you have data.
Try much larger work_mem first, I think that's the biggest gain for you.
--
Richard Huxton
Archonet Ltd
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