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From: Mel Gorman <mel@csn.ul.ie>
To: Christoph Lameter <clameter@sgi.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/8] Allow huge page allocations to use GFP_HIGH_MOVABLE
Date: Fri, 26 Jan 2007 17:37:27 +0000 (GMT)	[thread overview]
Message-ID: <Pine.LNX.4.64.0701261727400.23091@skynet.skynet.ie> (raw)
In-Reply-To: <Pine.LNX.4.64.0701260921310.7301@schroedinger.engr.sgi.com>

On Fri, 26 Jan 2007, Christoph Lameter wrote:

> On Fri, 26 Jan 2007, Mel Gorman wrote:
>
>>> What is the e1000 problem? Jumbo packet allocation via GFP_KERNEL?
>> Yes. Potentially the anti-fragmentation patches could address this by
>> clustering atomic allocations together as much as possible.
>
> GFP_ATOMIC allocs?

Yes

> Do you have a reference to the thread where this was
> discussed?
>

It's come up a few times and the converation is always fairly similar 
although the thread http://lkml.org/lkml/2006/9/22/44 has interesting 
information on the topic. There has been no serious discussion on whether 
anti-fragmentation would help it or not. I think it would if atomic 
allocations were clustered together because then jumbo frame allocations 
would cluster together in the same MAX_ORDER blocks and tend to keep other 
allocations away.


-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab

  reply	other threads:[~2007-01-26 17:37 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-25 23:44 [PATCH 0/8] Create ZONE_MOVABLE to partition memory between movable and non-movable pages Mel Gorman
2007-01-25 23:45 ` [PATCH 1/8] Add __GFP_MOVABLE for callers to flag allocations that may be migrated Mel Gorman
2007-01-26 12:27   ` Nick Piggin
2007-01-26 13:25     ` Mel Gorman
2007-01-25 23:45 ` [PATCH 2/8] Create the ZONE_MOVABLE zone Mel Gorman
2007-01-26 16:28   ` Christoph Lameter
2007-01-26 16:49     ` Mel Gorman
2007-01-29 17:28     ` Mel Gorman
2007-01-26 17:16   ` Christoph Lameter
2007-01-26 17:24     ` Mel Gorman
2007-01-26 17:25       ` Christoph Lameter
2007-01-26 17:38         ` Mel Gorman
2007-01-29 17:31     ` Mel Gorman
2007-01-25 23:45 ` [PATCH 3/8] Allow huge page allocations to use GFP_HIGH_MOVABLE Mel Gorman
2007-01-26 16:33   ` Christoph Lameter
2007-01-26 16:58     ` Mel Gorman
2007-01-26 17:04       ` Christoph Lameter
2007-01-26 17:20         ` Mel Gorman
2007-01-26 17:22           ` Christoph Lameter
2007-01-26 17:37             ` Mel Gorman [this message]
2007-01-26 17:45               ` Christoph Lameter
2007-01-26 17:53                 ` Mel Gorman
2007-01-26 18:20                   ` Christoph Lameter
2007-01-26 20:37                     ` Mel Gorman
2007-01-26 18:35                   ` Chris Friesen
2007-01-26 20:44                     ` Mel Gorman
2007-01-26 21:37                       ` Chris Friesen
2007-01-25 23:46 ` [PATCH 4/8] x86 - Specify amount of kernel memory at boot time Mel Gorman
2007-01-25 23:46 ` [PATCH 5/8] ppc and powerpc " Mel Gorman
2007-01-25 23:46 ` [PATCH 6/8] x86_64 " Mel Gorman
2007-01-25 23:47 ` [PATCH 7/8] ia64 " Mel Gorman
2007-01-25 23:47 ` [PATCH 8/8] Add documentation for additional boot parameter and sysctl Mel Gorman
2007-01-26 11:07 ` [PATCH 0/8] Create ZONE_MOVABLE to partition memory between movable and non-movable pages Andrew Morton
2007-01-26 14:29   ` Mel Gorman
2007-01-26 16:01     ` Christoph Lameter
2007-01-26 15:56   ` Christoph Lameter
2007-01-26 19:46     ` Andrew Morton
2007-01-26 19:58       ` Christoph Lameter
2007-01-26 20:27         ` Andrew Morton
2007-01-29 21:54           ` Christoph Lameter
2007-01-29 22:36             ` Andrew Morton
2007-01-29 22:45               ` Christoph Lameter
2007-01-29 22:50                 ` Russell King
2007-01-29 23:37                   ` Christoph Lameter
2007-01-30  0:09                     ` Andrew Morton
2007-01-30  9:53                       ` Peter Zijlstra
2007-02-02  5:27                         ` Christoph Lameter
2007-02-02  5:22                       ` Christoph Lameter
2007-01-26 16:21 ` Christoph Lameter
2007-01-26 16:48   ` Mel Gorman
2007-01-26 17:02     ` Christoph Lameter
2007-01-26 17:20       ` Mel Gorman
2007-03-01 10:08 [PATCH 0/8] Create optional ZONE_MOVABLE to partition memory between movable and non-movable pages v2 Mel Gorman
2007-03-01 10:09 ` [PATCH 3/8] Allow huge page allocations to use GFP_HIGH_MOVABLE Mel Gorman

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