From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Jack Steiner <steiner@sgi.com>
Cc: akpm@osdl.org, hugh@veritas.com, linux-mm@kvack.org,
linux-ia64@vger.kernel.org
Subject: Re: per_cpu_pagesets degrades MPI performance
Date: Tue, 05 Apr 2005 10:40:39 +1000 [thread overview]
Message-ID: <4251DE87.10002@yahoo.com.au> (raw)
In-Reply-To: <20050404192827.GA15142@sgi.com>
Jack Steiner wrote:
[snip nice detective work]
> Has anyone else seen this problem? I am considering adding
> a config option to allow a site to control the batch size
> used for per_cpu_pagesets. Are there other ideas that should
> be pursued?
>
What about using a non power of 2 for the batch? Like 5.
If that helps, then we can make a patch to clamp it to a
good value. At a guess I'd say a power of 2 +/- 1 might be
the way to go.
Nick
--
SUSE Labs, Novell Inc.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"aart@kvack.org"> aart@kvack.org </a>
next prev parent reply other threads:[~2005-04-05 0:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-04 19:28 Jack Steiner
2005-04-05 0:40 ` Nick Piggin [this message]
2005-04-05 3:02 ` Jack Steiner
2005-04-07 18:52 ` Jack Steiner
2005-04-08 0:41 ` Nick Piggin
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=4251DE87.10002@yahoo.com.au \
--to=nickpiggin@yahoo.com.au \
--cc=akpm@osdl.org \
--cc=hugh@veritas.com \
--cc=linux-ia64@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=steiner@sgi.com \
/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