Re: [REGRESSION] 2.6.19/2.6.20-rc3 buffered write slowdown

Nick Piggin
2007-01-12T00:06:48Z

Christoph Lameter wrote:
> On Thu, 11 Jan 2007, Nick Piggin wrote:
>
>
>>You're not turning on zone_reclaim, by any chance, are you?
>
>
> It is not a NUMA system so zone reclaim is not available.

Ah yes... Can't you force it on if you have a NUMA complied kernel?

> zone reclaim was
> already in 2.6.16.

Well it was a long shot, but that is something that has had a few
changes recently and is something that could interact badly with
the global pdflush.

--
SUSE Labs, Novell Inc.
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