From: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: linux-mm@kvack.org, akpm@linux-foundation.org, ak@suse.de,
eric.whitney@hp.com, Mel Gorman <mel@csn.ul.ie>
Subject: Re: [PATCH] Fix NUMA Memory Policy Reference Counting
Date: Mon, 17 Sep 2007 15:38:05 -0400 [thread overview]
Message-ID: <1190057885.5460.134.camel@localhost> (raw)
In-Reply-To: <Pine.LNX.4.64.0709171212360.27769@schroedinger.engr.sgi.com>
On Mon, 2007-09-17 at 12:14 -0700, Christoph Lameter wrote:
> On Mon, 17 Sep 2007, Lee Schermerhorn wrote:
>
> > Page allocation micro-benchmark:
> >
> > Time to fault in 256K 16k pages [ia64] into a 4G anon segment.
>
> You need to run this as a test that concurrently allocates these pages
> from as many processors as possible in a common address space. A single
> thread will not cause cache line bouncing. I suspect this will cause an
> additional issue than what we already have with mmap_sem locking.
>
Yeah, I'll have to write a custom, multithreaded test for this, or
enhance memtoy to attach shm segments by id and run lots of them
together. I'll try to get to it asap.
Lee
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next prev parent reply other threads:[~2007-09-17 19:38 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-30 18:50 [PATCH/RFC 0/5] Memory Policy Cleanups and Enhancements Lee Schermerhorn
2007-08-30 18:51 ` [PATCH/RFC 1/5] Mem Policy: fix reference counting Lee Schermerhorn
2007-09-11 18:48 ` Mel Gorman
2007-09-11 18:12 ` Lee Schermerhorn
2007-09-13 9:45 ` Mel Gorman
2007-08-30 18:51 ` [PATCH/RFC 2/5] Mem Policy: Use MPOL_PREFERRED for system-wide default policy Lee Schermerhorn
2007-09-11 18:54 ` Mel Gorman
2007-09-11 18:22 ` Lee Schermerhorn
2007-09-13 9:48 ` Mel Gorman
2007-08-30 18:51 ` [PATCH/RFC 3/5] Mem Policy: MPOL_PREFERRED fixups for "local allocation" Lee Schermerhorn
2007-09-11 18:58 ` Mel Gorman
2007-09-11 18:34 ` Lee Schermerhorn
2007-09-12 22:10 ` Christoph Lameter
2007-09-13 13:51 ` Lee Schermerhorn
2007-09-13 18:18 ` Christoph Lameter
2007-09-13 9:55 ` Mel Gorman
2007-09-12 22:06 ` Christoph Lameter
2007-09-13 13:35 ` Lee Schermerhorn
2007-09-13 18:21 ` Christoph Lameter
2007-08-30 18:51 ` [PATCH/RFC 4/5] Mem Policy: cpuset-independent interleave policy Lee Schermerhorn
2007-09-12 21:20 ` Ethan Solomita
2007-09-12 22:14 ` Christoph Lameter
2007-09-13 13:26 ` Lee Schermerhorn
2007-09-13 17:17 ` Ethan Solomita
2007-09-12 21:59 ` Ethan Solomita
2007-09-13 13:32 ` Lee Schermerhorn
2007-09-13 17:19 ` Ethan Solomita
2007-09-13 18:20 ` Christoph Lameter
2007-10-09 6:15 ` Ethan Solomita
2007-10-09 13:39 ` Lee Schermerhorn
2007-10-09 18:49 ` Christoph Lameter
2007-10-09 19:02 ` Lee Schermerhorn
2007-08-30 18:51 ` [PATCH/RFC 5/5] Mem Policy: add MPOL_F_MEMS_ALLOWED get_mempolicy() flag Lee Schermerhorn
2007-09-11 19:07 ` Mel Gorman
2007-09-11 18:42 ` Lee Schermerhorn
2007-09-12 22:14 ` Christoph Lameter
2007-09-14 20:24 ` [PATCH] " Lee Schermerhorn
2007-09-14 20:27 ` Christoph Lameter
2007-09-11 16:20 ` [PATCH/RFC 0/5] Memory Policy Cleanups and Enhancements Lee Schermerhorn
2007-09-11 19:12 ` Mel Gorman
2007-09-11 18:45 ` Lee Schermerhorn
2007-09-12 22:17 ` Christoph Lameter
2007-09-13 13:57 ` Lee Schermerhorn
2007-09-13 15:31 ` Mel Gorman
2007-09-13 15:01 ` Lee Schermerhorn
2007-09-13 18:55 ` Mel Gorman
2007-09-13 18:19 ` Christoph Lameter
2007-09-13 18:23 ` Mel Gorman
2007-09-13 18:26 ` Christoph Lameter
2007-09-13 21:17 ` Andrew Morton
2007-09-14 2:20 ` Christoph Lameter
2007-09-14 8:53 ` Mel Gorman
2007-09-14 15:06 ` Lee Schermerhorn
2007-09-14 17:46 ` Mel Gorman
2007-09-14 18:41 ` Christoph Lameter
2007-09-16 18:02 ` Mel Gorman
2007-09-17 18:12 ` Christoph Lameter
2007-09-17 18:19 ` Christoph Lameter
2007-09-17 20:14 ` Mel Gorman
2007-09-17 19:16 ` Christoph Lameter
2007-09-17 20:03 ` Mel Gorman
2007-09-14 20:15 ` Lee Schermerhorn
2007-09-16 18:05 ` Mel Gorman
2007-09-16 19:34 ` Andrew Morton
2007-09-16 21:22 ` Mel Gorman
2007-09-17 13:29 ` Lee Schermerhorn
2007-09-17 18:14 ` Christoph Lameter
2007-09-13 15:49 ` Lee Schermerhorn
2007-09-13 18:22 ` Christoph Lameter
2007-09-17 19:00 ` [PATCH] Fix NUMA Memory Policy Reference Counting Lee Schermerhorn
2007-09-17 19:14 ` Christoph Lameter
2007-09-17 19:38 ` Lee Schermerhorn [this message]
2007-09-17 19:43 ` Christoph Lameter
2007-09-19 22:03 ` Lee Schermerhorn
2007-09-19 22:23 ` Christoph Lameter
2007-09-18 10:36 ` Mel Gorman
2007-09-17 19:32 ` [PATCH] 2.6.23-rc6: " Lee Schermerhorn
2007-09-17 19:37 ` Christoph Lameter
2007-09-17 20:19 ` Lee Schermerhorn
2007-09-17 21:23 ` Christoph Lameter
2007-09-17 22:25 ` Andi Kleen
2007-09-18 19:30 ` Christoph Lameter
2007-09-17 22:28 ` Andi Kleen
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