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From: Manfred Spraul <manfred@colorfullife.com>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Mike Galbraith <efault@gmx.de>,
paulmck@linux.vnet.ibm.com, Nadia Derbey <Nadia.Derbey@bull.net>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: Scalability requirements for sysv ipc
Date: Sat, 22 Mar 2008 20:08:53 +0100 [thread overview]
Message-ID: <47E55945.10109@colorfullife.com> (raw)
In-Reply-To: <47E51637.8060102@colorfullife.com>
[-- Attachment #1: Type: text/plain, Size: 636 bytes --]
Hi all,
I've revived my Dual-CPU Pentium III/850:
I couldn't notice a scalability-problem (two cpus are around 190%, but
just the normal performance of 2.6.25-rc3 is abyssimal, 55 to 60% slower
than 2.6.18.8:
psem 2.6.18 2.6.25 Diff [%]
1 cpu 948.005 398.435 -57,97
2 cpus 1.768.273 734.816 -58,44
Scalability [%] 193,26 192,21
pmsg 2.6.18 2.6.25 Diff [%]
1 cpu 821.582 356.904 -56,56
2 cpus 1.488.058 661.754 -55,53
Scalability [%] 190,56 192,71
Attached are the .config files and the individual results.
Did I accidentially enable a scheduler debug option?
--
Manfred
[-- Attachment #2: bench.tar.gz --]
[-- Type: application/x-gzip, Size: 38101 bytes --]
next prev parent reply other threads:[~2008-03-22 19:09 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-21 9:41 Scalability requirements for sysv ipc (was: ipc: store ipcs into IDRs) Manfred Spraul
2008-03-21 12:45 ` Nadia Derbey
2008-03-21 13:33 ` Scalability requirements for sysv ipc Manfred Spraul
2008-03-21 14:13 ` Paul E. McKenney
2008-03-21 16:08 ` Manfred Spraul
2008-03-22 5:43 ` Mike Galbraith
2008-03-22 10:10 ` Manfred Spraul
2008-03-22 11:53 ` Mike Galbraith
2008-03-22 14:22 ` Manfred Spraul
2008-03-22 19:08 ` Manfred Spraul [this message]
2008-03-25 15:50 ` Mike Galbraith
2008-03-25 16:13 ` Peter Zijlstra
2008-03-25 18:31 ` Mike Galbraith
2008-03-26 6:18 ` Mike Galbraith
2008-03-30 14:12 ` Scalability requirements for sysv ipc (+namespaces broken with SEM_UNDO) Manfred Spraul
2008-03-30 15:21 ` David Newall
2008-03-30 17:18 ` Mike Galbraith
2008-04-04 14:59 ` Nadia Derbey
2008-04-04 15:03 ` Nadia Derbey
2008-03-22 19:35 ` Scalability requirements for sysv ipc Mike Galbraith
2008-03-23 6:38 ` Manfred Spraul
2008-03-23 7:15 ` Mike Galbraith
2008-03-23 7:08 ` Mike Galbraith
2008-03-23 7:20 ` Mike Galbraith
2008-03-27 22:29 ` Bill Davidsen
2008-03-28 9:49 ` Manfred Spraul
2008-03-25 16:00 ` Nadia Derbey
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