From: Andrew Morton <akpm@osdl.org>
To: Christoph Lameter <clameter@sgi.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@vger.kernel.org,
torvalds@osdl.org
Subject: Re: [PATCH] Prefaulting
Date: Fri, 11 Mar 2005 19:43:49 -0800 [thread overview]
Message-ID: <20050311194349.1e546d8c.akpm@osdl.org> (raw)
In-Reply-To: <Pine.LNX.4.58.0503111913560.24817@schroedinger.engr.sgi.com>
Christoph Lameter <clameter@sgi.com> wrote:
>
> There is even a slight performance win in the
> uniprocessor case:
>
> w/o any patch:
>
> Mb Rep Thr CLine User System Wall flt/cpu/s fault/wsec
> 200 3 1 1 0.01s 0.15s 0.01s846860.493 848882.424
> 200 3 1 1 0.01s 0.16s 0.01s827724.160 830841.482
> 200 3 1 1 0.00s 0.16s 0.01s827724.160 827364.176
>
> w/prefault patch
>
> 200 MB allocation
>
> Mb Rep Thr CLine User System Wall flt/cpu/s fault/wsec
> 200 3 1 1 0.02s 0.48s 0.05s860119.275 859918.989
> 200 3 1 1 0.02s 0.46s 0.04s886129.730 886551.621
> 200 3 1 1 0.01s 0.47s 0.04s887920.166 886855.775
But the system time went through the roof. Would that be accounting
inaccuracy?
next prev parent reply other threads:[~2005-03-12 3:47 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-11 12:47 Christoph Lameter
2005-03-12 1:22 ` Andrew Morton
2005-03-12 3:30 ` Christoph Lameter
2005-03-12 3:43 ` Andrew Morton [this message]
2005-03-16 19:30 ` Christoph Lameter
2005-03-12 9:10 ` Arjan van de Ven
2005-03-14 18:42 ` Martin J. Bligh
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20050311194349.1e546d8c.akpm@osdl.org \
--to=akpm@osdl.org \
--cc=clameter@sgi.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@vger.kernel.org \
--cc=torvalds@osdl.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®