From: Anton Blanchard <anton@samba.org>
To: "Joseph D. Wagner" <wagnerjd@prodigy.net>
Cc: "'Rob Mueller'" <robm@fastmail.fm>,
"'Mark Hahn'" <hahn@physics.mcmaster.ca>,
linux-kernel@vger.kernel.org,
"'Jeremy Howard'" <jhoward@fastmail.fm>
Subject: Re: Strange load spikes on 2.4.19 kernel
Date: Sun, 13 Oct 2002 18:59:38 +1000 [thread overview]
Message-ID: <20021013085938.GA23575@krispykreme> (raw)
In-Reply-To: <000001c27286$6ab6bc60$7443f4d1@joe>
> I'll let you in on a dirty little secret. The Linux file system does
> not utilize SMP. That's right. All file processes go through one and
> only one processor. It has to do with the fact that the Linux kernel is
> a non-preemptive kernel.
My 24 way SMP disagrees with your analysis:
http://samba.org/~anton/linux/2.5.40/dbench/
Thats just ext2. dbench is a filesystem benchmark that is heavy on
inode/block allocation.
Please show us your profiles which show linux filesystems do not
utilise SMP.
Anton
next prev parent reply other threads:[~2002-10-13 8:56 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.33.0210130202070.17395-100000@coffee.psychology.mcmaster.ca>
2002-10-13 6:34 ` Strange load spikes on 2.4.19 kernel Rob Mueller
2002-10-13 7:01 ` Joseph D. Wagner
2002-10-13 7:01 ` David S. Miller
2002-10-13 7:49 ` Joseph D. Wagner
2002-10-13 7:50 ` David S. Miller
2002-10-13 8:16 ` Joseph D. Wagner
2002-10-13 8:13 ` David S. Miller
2002-10-13 8:40 ` Joseph D. Wagner
2002-10-13 8:45 ` David S. Miller
2002-10-13 8:48 ` Mike Galbraith
2002-10-13 8:48 ` David S. Miller
2002-10-13 8:51 ` William Lee Irwin III
2002-10-13 10:20 ` Ingo Molnar
2002-10-13 19:42 ` Rik van Riel
2002-10-16 21:00 ` Bill Davidsen
2002-10-13 8:59 ` Anton Blanchard [this message]
2002-10-13 9:26 ` William Lee Irwin III
2002-10-13 12:31 ` Marius Gedminas
2002-12-11 22:54 Steven Roussey
2002-12-11 23:09 ` Andrew Morton
2002-12-11 23:54 ` Steven Roussey
2002-12-12 0:13 ` Andrew Morton
2002-12-12 0:31 ` Steven Roussey
[not found] <113001c27282$93955eb0$1900a8c0@lifebook.suse.lists.linux.kernel>
[not found] ` <000001c27286$6ab6bc60$7443f4d1@joe.suse.lists.linux.kernel>
[not found] ` <20021013.000127.43007739.davem@redhat.com.suse.lists.linux.kernel>
2002-10-13 7:24 ` Andi Kleen
2002-10-13 7:21 ` David S. Miller
2002-10-13 11:47 ` Hugh Dickins
2002-10-13 18:29 ` Andrew Morton
[not found] <Pine.LNX.4.33.0210121605490.16179-100000@coffee.psychology.mcmaster.ca>
2002-10-13 0:49 ` Rob Mueller
[not found] <001401c2719b$9d45c4a0$53241c43@joe>
2002-10-12 6:54 ` Rob Mueller
-- strict thread matches above, loose matches on Subject: below --
2002-10-12 3:13 Joseph D. Wagner
2002-10-12 3:10 Joseph D. Wagner
2002-10-12 1:12 Rob Mueller
2002-10-12 1:25 ` Andrew Morton
2002-10-12 2:25 ` Rob Mueller
2002-10-12 3:07 ` Andrew Morton
2002-10-12 6:37 ` Rob Mueller
2002-10-12 6:44 ` Andrew Morton
2002-10-12 6:52 ` Rob Mueller
2002-10-12 7:00 ` Andrew Morton
2002-10-13 6:14 ` Rob Mueller
2002-10-13 7:27 ` Simon Kirby
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