From: Andi Kleen <ak@suse.de>
To: "David S. Miller" <davem@redhat.com>
Cc: wagnerjd@prodigy.net, robm@fastmail.fm, hahn@physics.mcmaster.ca,
linux-kernel@vger.kernel.org, jhoward@fastmail.fm
Subject: Re: Strange load spikes on 2.4.19 kernel
Date: 13 Oct 2002 09:24:32 +0200 [thread overview]
Message-ID: <p73elaupzrj.fsf@oldwotan.suse.de> (raw)
In-Reply-To: "David S. Miller"'s message of "13 Oct 2002 09:12:48 +0200"
"David S. Miller" <davem@redhat.com> writes:
>
> Allocating blocks and inodes, yes that is currently single
> threaded on SMP. But there is no fundamental reason for that,
> we just haven't gotten around to threading that bit yet.
It depends on your file system. XFS and JFS do block and inode allocation
fully SMP multithreaded. reiserfs/ext2/ext3 do not.
Still in 2.4 the VFS takes the big kernel lock unnecessarily for
a few VFS operations (no matter if the underlying FS needs it or not).
That's fixed in 2.5.
-Andi
next parent reply other threads:[~2002-10-13 7:18 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
[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 [this message]
2002-10-13 7:21 ` David S. Miller
2002-10-13 11:47 ` Hugh Dickins
2002-10-13 18:29 ` Andrew Morton
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] <Pine.LNX.4.33.0210130202070.17395-100000@coffee.psychology.mcmaster.ca>
2002-10-13 6:34 ` 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
2002-10-13 9:26 ` William Lee Irwin III
2002-10-13 12:31 ` Marius Gedminas
[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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