From: Ulrich Drepper <drepper@redhat.com>
To: Pierre Peiffer <pierre.peiffer@bull.net>
Cc: LKML <linux-kernel@vger.kernel.org>,
"Dinakar Guniguntala" <dino@in.ibm.com>,
"Jean-Pierre Dion" <jean-pierre.dion@bull.net>,
"Ingo Molnar" <mingo@elte.hu>, "Jakub Jelinek" <jakub@redhat.com>,
"Darren Hart" <dvhltc@us.ibm.com>,
"Sébastien Dugué" <sebastien.dugue@bull.net>
Subject: Re: [PATCH 2.6.20-rc4 1/4] futex priority based wakeup
Date: Tue, 09 Jan 2007 08:29:02 -0800 [thread overview]
Message-ID: <45A3C2CE.7070500@redhat.com> (raw)
In-Reply-To: <45A3BFC8.1030104@bull.net>
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Pierre Peiffer wrote:
> This patch makes use of plist (pirotity ordered lists) instead of simple
> list in
> futex_hash_bucket.
I have never seen performance numbers for this. If it is punishing
existing code in a measurable way I think it's not anacceptable default
behavior.
--
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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next prev parent reply other threads:[~2007-01-09 16:30 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <45A3B330.9000104@bull.net>
2007-01-09 16:16 ` [PATCH 2.6.20-rc4 1/4] futex priority based wakeup Pierre Peiffer
2007-01-09 16:29 ` Ulrich Drepper [this message]
2007-01-10 11:47 ` Pierre Peiffer
2007-01-10 12:03 ` Pierre Peiffer
2007-01-10 12:54 ` Jakub Jelinek
2007-01-10 15:05 ` Pierre Peiffer
2007-01-10 18:15 ` Ulrich Drepper
2007-01-11 7:20 ` Ulrich Drepper
2007-01-09 17:59 ` Daniel Walker
2007-01-10 16:11 ` Daniel Walker
2007-01-10 16:29 ` Pierre Peiffer
2007-01-10 16:33 ` Daniel Walker
2007-01-09 16:16 ` [PATCH 2.6.20-rc4 2/4] Make futex_wait() use an hrtimer for timeout Pierre Peiffer
2007-01-09 16:20 ` [PATCH 2.6.20-rc4 3/4] futex_requeue_pi optimization Pierre Peiffer
2007-01-09 16:33 ` Ulrich Drepper
2007-01-10 8:17 ` Pierre Peiffer
2007-01-10 8:24 ` Ulrich Drepper
2007-01-09 16:25 ` [PATCH 2.6.20-rc4 4/4][RFC] sys_futex64 : allows 64bit futexes Pierre Peiffer
2007-01-11 21:49 ` Andrew Morton
2007-01-11 22:14 ` Jakub Jelinek
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