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From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Christoph Lameter <clameter@sgi.com>
Cc: David Chinner <dgc@sgi.com>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [REGRESSION] 2.6.19/2.6.20-rc3 buffered write slowdown
Date: Fri, 12 Jan 2007 11:06:48 +1100	[thread overview]
Message-ID: <45A6D118.5030508@yahoo.com.au> (raw)
In-Reply-To: <Pine.LNX.4.64.0701110950380.28802@schroedinger.engr.sgi.com>

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.
Send instant messages to your online friends http://au.messenger.yahoo.com 

  reply	other threads:[~2007-01-12  0:07 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-10 22:37 David Chinner
2007-01-10 23:04 ` Christoph Lameter
2007-01-10 23:08   ` David Chinner
2007-01-10 23:12     ` Christoph Lameter
2007-01-10 23:18       ` David Chinner
2007-01-10 23:13     ` Nick Piggin
2007-01-11  0:31       ` David Chinner
2007-01-11  0:43         ` Christoph Lameter
2007-01-11  1:06           ` David Chinner
2007-01-11  1:40             ` Christoph Lameter
2007-01-11  2:57               ` David Chinner
2007-01-11  1:08         ` Nick Piggin
2007-01-11  1:24           ` David Chinner
2007-01-11  9:27             ` Nick Piggin
2007-01-11 17:51               ` Christoph Lameter
2007-01-12  0:06                 ` Nick Piggin [this message]
2007-01-12  3:04                   ` Christoph Lameter
     [not found]           ` <20070111063555.GB33919298@melbourne.sgi.com>
2007-01-11  9:23             ` Nick Piggin
2007-01-11  1:11     ` David Chinner

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