From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: Pekka Enberg <penberg@kernel.org>
Cc: Christoph Lameter <cl@linux.com>, Dave Jones <davej@redhat.com>,
Mel Gorman <mgorman@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
Colin King <colin.king@canonical.com>,
Raghavendra D Prabhu <raghu.prabhu13@gmail.com>,
Jan Kara <jack@suse.cz>, Chris Mason <chris.mason@oracle.com>,
Rik van Riel <riel@redhat.com>,
Johannes Weiner <hannes@cmpxchg.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-ext4 <linux-ext4@vger.kernel.org>,
Andrea Arcangeli <aarcange@redhat.com>
Subject: Re: [PATCH 3/3] mm: slub: Default slub_max_order to 0
Date: Thu, 12 May 2011 13:36:15 -0500 [thread overview]
Message-ID: <1305225375.2575.65.camel@mulgrave.site> (raw)
In-Reply-To: <BANLkTimDsJDht76Vm7auNqT2gncjpEKZQw@mail.gmail.com>
On Thu, 2011-05-12 at 20:11 +0300, Pekka Enberg wrote:
> On Thu, May 12, 2011 at 8:06 PM, Pekka Enberg <penberg@kernel.org> wrote:
> > On Thu, May 12, 2011 at 7:30 PM, James Bottomley
> > <James.Bottomley@hansenpartnership.com> wrote:
> >> So suggest an alternative root cause and a test to expose it.
> >
> > Is your .config available somewhere, btw?
>
> If it's this:
>
> http://pkgs.fedoraproject.org/gitweb/?p=kernel.git;a=blob_plain;f=config-x86_64-generic;hb=HEAD
>
> I'd love to see what happens if you disable
>
> CONFIG_TRANSPARENT_HUGEPAGE=y
>
> because that's going to reduce high order allocations as well, no?
So yes, it's a default FC15 config.
Disabling THP was initially tried a long time ago and didn't make a
difference (it was originally suggested by Chris Mason).
James
WARNING: multiple messages have this Message-ID (diff)
From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: Pekka Enberg <penberg@kernel.org>
Cc: Christoph Lameter <cl@linux.com>, Dave Jones <davej@redhat.com>,
Mel Gorman <mgorman@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
Colin King <colin.king@canonical.com>,
Raghavendra D Prabhu <raghu.prabhu13@gmail.com>,
Jan Kara <jack@suse.cz>, Chris Mason <chris.mason@oracle.com>,
Rik van Riel <riel@redhat.com>,
Johannes Weiner <hannes@cmpxchg.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-ext4 <linux-ext4@vger.kernel.org>,
Andrea Arcangeli <aarcange@redhat.com>
Subject: Re: [PATCH 3/3] mm: slub: Default slub_max_order to 0
Date: Thu, 12 May 2011 13:36:15 -0500 [thread overview]
Message-ID: <1305225375.2575.65.camel@mulgrave.site> (raw)
In-Reply-To: <BANLkTimDsJDht76Vm7auNqT2gncjpEKZQw@mail.gmail.com>
On Thu, 2011-05-12 at 20:11 +0300, Pekka Enberg wrote:
> On Thu, May 12, 2011 at 8:06 PM, Pekka Enberg <penberg@kernel.org> wrote:
> > On Thu, May 12, 2011 at 7:30 PM, James Bottomley
> > <James.Bottomley@hansenpartnership.com> wrote:
> >> So suggest an alternative root cause and a test to expose it.
> >
> > Is your .config available somewhere, btw?
>
> If it's this:
>
> http://pkgs.fedoraproject.org/gitweb/?p=kernel.git;a=blob_plain;f=config-x86_64-generic;hb=HEAD
>
> I'd love to see what happens if you disable
>
> CONFIG_TRANSPARENT_HUGEPAGE=y
>
> because that's going to reduce high order allocations as well, no?
So yes, it's a default FC15 config.
Disabling THP was initially tried a long time ago and didn't make a
difference (it was originally suggested by Chris Mason).
James
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next prev parent reply other threads:[~2011-05-12 18:36 UTC|newest]
Thread overview: 157+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-11 15:29 [PATCH 0/3] Reduce impact to overall system of SLUB using high-order allocations Mel Gorman
2011-05-11 15:29 ` Mel Gorman
2011-05-11 15:29 ` [PATCH 1/3] mm: slub: Do not wake kswapd for SLUBs speculative " Mel Gorman
2011-05-11 15:29 ` Mel Gorman
2011-05-11 20:38 ` David Rientjes
2011-05-11 20:38 ` David Rientjes
2011-05-11 15:29 ` [PATCH 2/3] mm: slub: Do not take expensive steps " Mel Gorman
2011-05-11 15:29 ` Mel Gorman
2011-05-11 20:38 ` David Rientjes
2011-05-11 20:38 ` David Rientjes
2011-05-11 21:10 ` Mel Gorman
2011-05-11 21:10 ` Mel Gorman
2011-05-12 17:25 ` Andrea Arcangeli
2011-05-12 17:25 ` Andrea Arcangeli
2011-05-11 15:29 ` [PATCH 3/3] mm: slub: Default slub_max_order to 0 Mel Gorman
2011-05-11 15:29 ` Mel Gorman
2011-05-11 20:38 ` David Rientjes
2011-05-11 20:38 ` David Rientjes
2011-05-11 20:53 ` James Bottomley
2011-05-11 20:53 ` James Bottomley
2011-05-11 21:09 ` Mel Gorman
2011-05-11 21:09 ` Mel Gorman
2011-05-11 22:27 ` David Rientjes
2011-05-11 22:27 ` David Rientjes
2011-05-13 10:14 ` Mel Gorman
2011-05-13 10:14 ` Mel Gorman
2011-05-12 17:36 ` Andrea Arcangeli
2011-05-12 17:36 ` Andrea Arcangeli
2011-05-16 21:03 ` David Rientjes
2011-05-16 21:03 ` David Rientjes
2011-05-17 9:48 ` Mel Gorman
2011-05-17 9:48 ` Mel Gorman
2011-05-17 19:25 ` David Rientjes
2011-05-17 19:25 ` David Rientjes
2011-05-12 14:43 ` Christoph Lameter
2011-05-12 14:43 ` Christoph Lameter
2011-05-12 15:15 ` James Bottomley
2011-05-12 15:15 ` James Bottomley
2011-05-12 15:27 ` Christoph Lameter
2011-05-12 15:27 ` Christoph Lameter
2011-05-12 15:43 ` James Bottomley
2011-05-12 15:43 ` James Bottomley
2011-05-12 15:46 ` Dave Jones
2011-05-12 15:46 ` Dave Jones
2011-05-12 16:00 ` James Bottomley
2011-05-12 16:00 ` James Bottomley
2011-05-12 16:08 ` Dave Jones
2011-05-12 16:08 ` Dave Jones
2011-05-12 16:27 ` Christoph Lameter
2011-05-12 16:27 ` Christoph Lameter
2011-05-12 16:30 ` James Bottomley
2011-05-12 16:30 ` James Bottomley
2011-05-12 16:48 ` Christoph Lameter
2011-05-12 16:48 ` Christoph Lameter
2011-05-12 17:46 ` Andrea Arcangeli
2011-05-12 17:46 ` Andrea Arcangeli
2011-05-12 18:00 ` Christoph Lameter
2011-05-12 18:00 ` Christoph Lameter
2011-05-12 18:18 ` Andrea Arcangeli
2011-05-12 18:18 ` Andrea Arcangeli
2011-05-12 17:06 ` Pekka Enberg
2011-05-12 17:06 ` Pekka Enberg
2011-05-12 17:11 ` Pekka Enberg
2011-05-12 17:11 ` Pekka Enberg
2011-05-12 17:38 ` Christoph Lameter
2011-05-12 17:38 ` Christoph Lameter
2011-05-12 18:00 ` Andrea Arcangeli
2011-05-12 18:00 ` Andrea Arcangeli
2011-05-13 9:49 ` Mel Gorman
2011-05-13 9:49 ` Mel Gorman
2011-05-15 16:39 ` Andrea Arcangeli
2011-05-15 16:39 ` Andrea Arcangeli
2011-05-16 8:42 ` Mel Gorman
2011-05-16 8:42 ` Mel Gorman
2011-05-12 17:51 ` Andrea Arcangeli
2011-05-12 17:51 ` Andrea Arcangeli
2011-05-12 18:03 ` Christoph Lameter
2011-05-12 18:03 ` Christoph Lameter
2011-05-12 18:09 ` Andrea Arcangeli
2011-05-12 18:09 ` Andrea Arcangeli
2011-05-12 18:16 ` Christoph Lameter
2011-05-12 18:16 ` Christoph Lameter
2011-05-12 18:36 ` James Bottomley [this message]
2011-05-12 18:36 ` James Bottomley
2011-05-12 17:40 ` Andrea Arcangeli
2011-05-12 17:40 ` Andrea Arcangeli
2011-05-12 15:55 ` Pekka Enberg
2011-05-12 15:55 ` Pekka Enberg
2011-05-12 18:37 ` James Bottomley
2011-05-12 18:37 ` James Bottomley
2011-05-12 18:46 ` Christoph Lameter
2011-05-12 18:46 ` Christoph Lameter
2011-05-12 19:21 ` James Bottomley
2011-05-12 19:21 ` James Bottomley
2011-05-12 19:44 ` James Bottomley
2011-05-12 19:44 ` James Bottomley
2011-05-12 20:04 ` James Bottomley
2011-05-12 20:04 ` James Bottomley
2011-05-12 20:29 ` Johannes Weiner
2011-05-12 20:29 ` Johannes Weiner
2011-05-12 20:31 ` Johannes Weiner
2011-05-12 20:31 ` Johannes Weiner
2011-05-12 20:31 ` James Bottomley
2011-05-12 20:31 ` James Bottomley
2011-05-12 22:04 ` James Bottomley
2011-05-12 22:04 ` James Bottomley
2011-05-12 22:15 ` Johannes Weiner
2011-05-12 22:15 ` Johannes Weiner
2011-05-12 22:58 ` Minchan Kim
2011-05-12 22:58 ` Minchan Kim
2011-05-12 22:58 ` Minchan Kim
2011-05-13 5:39 ` Minchan Kim
2011-05-13 5:39 ` Minchan Kim
2011-05-13 0:47 ` James Bottomley
2011-05-13 0:47 ` James Bottomley
2011-05-13 4:12 ` James Bottomley
2011-05-13 4:12 ` James Bottomley
2011-05-13 10:55 ` Mel Gorman
2011-05-13 10:55 ` Mel Gorman
2011-05-13 14:16 ` James Bottomley
2011-05-13 14:16 ` James Bottomley
2011-05-13 10:30 ` Mel Gorman
2011-05-13 10:30 ` Mel Gorman
2011-05-13 6:16 ` Pekka Enberg
2011-05-13 6:16 ` Pekka Enberg
2011-05-13 6:16 ` Pekka Enberg
2011-05-13 10:05 ` Mel Gorman
2011-05-13 10:05 ` Mel Gorman
2011-05-13 10:05 ` Mel Gorman
2011-05-12 16:01 ` Christoph Lameter
2011-05-12 16:01 ` Christoph Lameter
2011-05-12 16:10 ` Eric Dumazet
2011-05-12 16:10 ` Eric Dumazet
2011-05-12 16:10 ` Eric Dumazet
2011-05-12 17:37 ` Andrew Morton
2011-05-12 17:37 ` Andrew Morton
2011-05-12 15:45 ` Dave Jones
2011-05-12 15:45 ` Dave Jones
2011-05-11 21:39 ` [PATCH 0/3] Reduce impact to overall system of SLUB using high-order allocations James Bottomley
2011-05-11 21:39 ` James Bottomley
2011-05-11 22:28 ` David Rientjes
2011-05-11 22:28 ` David Rientjes
2011-05-11 22:34 ` James Bottomley
2011-05-11 22:34 ` James Bottomley
2011-05-12 11:13 ` Pekka Enberg
2011-05-12 11:13 ` Pekka Enberg
2011-05-12 13:19 ` Mel Gorman
2011-05-12 13:19 ` Mel Gorman
2011-05-12 14:04 ` James Bottomley
2011-05-12 14:04 ` James Bottomley
2011-05-12 15:53 ` James Bottomley
2011-05-13 11:25 ` Mel Gorman
2011-05-13 11:25 ` Mel Gorman
2011-05-12 18:04 ` Andrea Arcangeli
2011-05-12 18:04 ` Andrea Arcangeli
2011-05-13 11:24 ` Mel Gorman
2011-05-13 11:24 ` Mel Gorman
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