From: Andrew Morton <akpm@osdl.org>
To: Christoph Lameter <clameter@engr.sgi.com>
Cc: peterc@gelato.unsw.edu.au, torvalds@osdl.org, hugh@veritas.com,
piggin@cyberone.com.au, linux-mm@kvack.org
Subject: Re: pagefault scalability patches
Date: Wed, 17 Aug 2005 17:47:20 -0700 [thread overview]
Message-ID: <20050817174720.47ac351f.akpm@osdl.org> (raw)
In-Reply-To: <Pine.LNX.4.62.0508171656080.19528@schroedinger.engr.sgi.com>
Christoph Lameter <clameter@engr.sgi.com> wrote:
>
> On Thu, 18 Aug 2005, Peter Chubb wrote:
>
> > >>>>> "Andrew" == Andrew Morton <akpm@osdl.org> writes:
> >
> > Andrew> The decreases in system CPU time for the single-threaded case
> > Andrew> are extraordinarily high.
> >
> > Are the sizes of the test the same? The unpatched version says 16G,
> > the patched one 4G --- with a quarter the memory size I'd expect less
> > than a quarter of the overhead...
>
> Yup I screwed up.
>
> Patched:
>
> Gb Rep Threads User System Wall flt/cpu/s fault/wsec
> 16 3 1 0.859s 64.994s 65.084s 47768.542 47771.664
Versus:
> Unpatched:
>
> Gb Rep Threads User System Wall flt/cpu/s fault/wsec
> 16 3 1 0.757s 62.772s 63.052s 49515.393 49522.112
It got slower?
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next prev parent reply other threads:[~2005-08-18 0:47 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-17 22:17 Andrew Morton
2005-08-17 22:19 ` Christoph Lameter
2005-08-17 22:36 ` Linus Torvalds
2005-08-17 22:51 ` Christoph Lameter
2005-08-17 23:01 ` Linus Torvalds
2005-08-17 23:12 ` Christoph Lameter
2005-08-17 23:23 ` Linus Torvalds
2005-08-17 23:31 ` Christoph Lameter
2005-08-17 23:30 ` Andrew Morton
2005-08-17 23:33 ` Christoph Lameter
2005-08-17 23:44 ` Andrew Morton
2005-08-17 23:52 ` Peter Chubb
2005-08-17 23:58 ` Christoph Lameter
2005-08-18 0:47 ` Andrew Morton [this message]
2005-08-18 16:09 ` Christoph Lameter
2005-08-22 2:13 ` Benjamin Herrenschmidt
2005-08-18 0:43 ` Andrew Morton
2005-08-18 16:04 ` Christoph Lameter
2005-08-18 20:16 ` Hugh Dickins
2005-08-19 1:22 ` [PATCH] use mm_counter macros for nr_pte since its also under ptl Christoph Lameter
2005-08-19 3:17 ` Andrew Morton
2005-08-19 3:51 ` Christoph Lameter
2005-08-19 1:33 ` pagefault scalability patches Christoph Lameter
2005-08-19 3:53 ` [RFC] Concept for delayed counter updates in mm_struct Christoph Lameter
2005-08-19 4:29 ` Andrew Morton
2005-08-19 4:34 ` Andi Kleen
2005-08-19 4:49 ` Linus Torvalds
2005-08-19 16:06 ` Christoph Lameter
2005-08-20 7:33 ` [PATCH] mm_struct counter deltas in task_struct Christoph Lameter
2005-08-20 7:35 ` [PATCH] Use deltas to replace atomic inc Christoph Lameter
2005-08-20 7:58 ` Andrew Morton
2005-08-22 3:32 ` Christoph Lameter
2005-08-22 3:48 ` Linus Torvalds
2005-08-22 4:06 ` Christoph Lameter
2005-08-22 4:18 ` Linus Torvalds
2005-08-22 13:23 ` Christoph Lameter
2005-08-22 14:22 ` Hugh Dickins
2005-08-22 15:24 ` Christoph Lameter
2005-08-22 15:43 ` Andi Kleen
2005-08-22 16:24 ` Christoph Lameter
2005-08-22 20:30 ` [PATCH] mm_struct counter deltas V2 Christoph Lameter
2005-08-22 20:31 ` [PATCH] Use deltas to replace atomic inc V2 Christoph Lameter
2005-08-22 2:09 ` pagefault scalability patches Benjamin Herrenschmidt
2005-08-18 2:00 ` Nick Piggin
2005-08-18 8:38 ` Nick Piggin
2005-08-18 16:17 ` Christoph Lameter
2005-08-22 2:04 ` Benjamin Herrenschmidt
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