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From: Ravikiran G Thirumalai <kiran@scalex86.org>
To: Andrew Morton <akpm@osdl.org>
Cc: Christoph Lameter <clameter@sgi.com>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	Andi Kleen <ak@suse.de>,
	"Shai Fultheim (Shai@scalex86.org)" <shai@scalex86.org>,
	pravin b shelar <pravin.shelar@calsoftinc.com>,
	a.p.zijlstra@chello.nl
Subject: Re: High lock spin time for zone->lru_lock under extreme conditions
Date: Fri, 12 Jan 2007 23:42:42 -0800	[thread overview]
Message-ID: <20070113074242.GB4234@localhost.localdomain> (raw)
In-Reply-To: <20070112171116.a8f62ecb.akpm@osdl.org>

On Fri, Jan 12, 2007 at 05:11:16PM -0800, Andrew Morton wrote:
> On Fri, 12 Jan 2007 17:00:39 -0800
> Ravikiran G Thirumalai <kiran@scalex86.org> wrote:
> 
> > But is
> > lru_lock an issue is another question.
> 
> I doubt it, although there might be changes we can make in there to
> work around it.
> 
> <mentions PAGEVEC_SIZE again>

I tested with PAGEVEC_SIZE define to 62 and 126 -- no difference.  I still
notice the atrociously high spin times.

Thanks,
Kiran

WARNING: multiple messages have this Message-ID (diff)
From: Ravikiran G Thirumalai <kiran@scalex86.org>
To: Andrew Morton <akpm@osdl.org>
Cc: Christoph Lameter <clameter@sgi.com>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	Andi Kleen <ak@suse.de>,
	"Shai Fultheim (Shai@scalex86.org)" <shai@scalex86.org>,
	pravin b shelar <pravin.shelar@calsoftinc.com>,
	a.p.zijlstra@chello.nl
Subject: Re: High lock spin time for zone->lru_lock under extreme conditions
Date: Fri, 12 Jan 2007 23:42:42 -0800	[thread overview]
Message-ID: <20070113074242.GB4234@localhost.localdomain> (raw)
In-Reply-To: <20070112171116.a8f62ecb.akpm@osdl.org>

On Fri, Jan 12, 2007 at 05:11:16PM -0800, Andrew Morton wrote:
> On Fri, 12 Jan 2007 17:00:39 -0800
> Ravikiran G Thirumalai <kiran@scalex86.org> wrote:
> 
> > But is
> > lru_lock an issue is another question.
> 
> I doubt it, although there might be changes we can make in there to
> work around it.
> 
> <mentions PAGEVEC_SIZE again>

I tested with PAGEVEC_SIZE define to 62 and 126 -- no difference.  I still
notice the atrociously high spin times.

Thanks,
Kiran

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  reply	other threads:[~2007-01-13  7:43 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-12 16:01 High lock spin time for zone->lru_lock under extreme conditions Ravikiran G Thirumalai
2007-01-12 16:01 ` Ravikiran G Thirumalai
2007-01-12 17:03 ` Peter Zijlstra
2007-01-12 17:03   ` Peter Zijlstra
2007-01-12 19:46 ` Christoph Lameter
2007-01-12 19:46   ` Christoph Lameter
2007-01-12 21:25   ` Andrew Morton
2007-01-12 21:25     ` Andrew Morton
2007-01-12 21:40   ` Ravikiran G Thirumalai
2007-01-12 21:40     ` Ravikiran G Thirumalai
2007-01-12 21:45     ` Christoph Lameter
2007-01-12 21:45       ` Christoph Lameter
2007-01-13  1:00       ` Ravikiran G Thirumalai
2007-01-13  1:00         ` Ravikiran G Thirumalai
2007-01-13  1:11         ` Andrew Morton
2007-01-13  1:11           ` Andrew Morton
2007-01-13  7:42           ` Ravikiran G Thirumalai [this message]
2007-01-13  7:42             ` Ravikiran G Thirumalai
2007-01-13  4:39 ` Nick Piggin
2007-01-13  4:39   ` Nick Piggin
2007-01-13  7:36   ` Ravikiran G Thirumalai
2007-01-13  7:36     ` Ravikiran G Thirumalai
2007-01-13  7:53     ` Nick Piggin
2007-01-13  7:53       ` Nick Piggin
2007-01-13  8:00     ` Andrew Morton
2007-01-13  8:00       ` Andrew Morton
2007-01-13 19:53       ` Ravikiran G Thirumalai
2007-01-13 19:53         ` Ravikiran G Thirumalai
2007-01-13 21:20         ` Andrew Morton
2007-01-13 21:20           ` Andrew Morton
2007-01-16  2:56           ` Ravikiran G Thirumalai
2007-01-16  2:56             ` Ravikiran G Thirumalai

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