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Re: Pet Peeves?

From: "Holger Hoffstaette" <holger(at)wizards(dot)de>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: Pet Peeves?
Date: 2009-01-31 16:52:58
Message-ID: pan.2009.01.31.16.52.58.596500@wizards.de (view raw or flat)
Thread:
Lists: pgsql-general
On Sat, 31 Jan 2009 15:28:31 +0100, Martijn van Oosterhout wrote:

> Nicest would be ofcourse a niceness level, so that VACUUM slows itself
> down according to the amount of queries going on (to a minimum ofcourse).

Linux has IO priority support for this, see ionice. Starting with 2.6.28
the CFQ scheduler behaviour is fixed (no more excessive write delays or
bad read interaction), so autovacuum should really run in a lower
priority class.

-h



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