From: Dipankar Sarma <dipankar@in.ibm.com>
To: davem@redhat.com
Cc: marcelo@connectiva.com.br, riel@connectiva.com.br,
Andrea Arcangeli <andrea@suse.de>,
torvalds@transmeta.com, linux-kernel@vger.kernel.org,
hawkes@engr.sgi.com
Subject: Re: Locking comment on shrink_caches()
Date: Wed, 26 Sep 2001 10:34:24 +0530 [thread overview]
Message-ID: <20010926103424.A8893@in.ibm.com> (raw)
In article <20010925.132816.52117370.davem@redhat.com> David S. Miller wrote:
> From: Rik van Riel <riel@conectiva.com.br>
> Date: Tue, 25 Sep 2001 17:24:21 -0300 (BRST)
>
> Or were you measuring loads which are mostly read-only ?
> When Kanoj Sarcar was back at SGI testing 32 processor Origin
> MIPS systems, pagecache_lock was at the top.
John Hawkes from SGI had published some AIM7 numbers that showed
pagecache_lock to be a bottleneck above 4 processors. At 32 processors,
half the CPU cycles were spent on waiting for pagecache_lock. The
thread is at -
http://marc.theaimsgroup.com/?l=lse-tech&m=98459051027582&w=2
Thanks
Dipankar
--
Dipankar Sarma <dipankar@in.ibm.com> Project: http://lse.sourceforge.net
Linux Technology Center, IBM Software Lab, Bangalore, India.
next reply other threads:[~2001-09-26 4:59 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-26 5:04 Dipankar Sarma [this message]
2001-09-26 5:31 ` Locking comment on shrink_caches() Andrew Morton
2001-09-26 6:57 ` David S. Miller
2001-09-26 7:08 ` Dipankar Sarma
2001-09-26 16:52 ` John Hawkes
[not found] <fa.cbgmt3v.192gc8r@ifi.uio.no>
[not found] ` <fa.cd0mtbv.1aigc0v@ifi.uio.no>
[not found] ` <i1m66a5o1zc.fsf@verden.pvv.ntnu.no>
2001-09-27 1:34 ` Vojtech Pavlik
-- strict thread matches above, loose matches on Subject: below --
2001-09-25 17:49 Marcelo Tosatti
2001-09-25 19:57 ` David S. Miller
2001-09-25 18:40 ` Marcelo Tosatti
2001-09-25 20:15 ` David S. Miller
2001-09-25 19:02 ` Marcelo Tosatti
2001-09-25 20:29 ` David S. Miller
2001-09-25 21:00 ` Benjamin LaHaise
2001-09-25 21:55 ` David S. Miller
2001-09-25 22:16 ` Benjamin LaHaise
2001-09-25 22:28 ` David S. Miller
2001-09-26 16:40 ` Alan Cox
2001-09-26 17:25 ` Linus Torvalds
2001-09-26 17:40 ` Alan Cox
2001-09-26 17:44 ` Linus Torvalds
2001-09-26 18:01 ` Benjamin LaHaise
2001-09-26 18:01 ` Dave Jones
2001-09-26 20:20 ` Vojtech Pavlik
2001-09-26 20:24 ` Vojtech Pavlik
2001-09-26 17:43 ` Richard Gooch
2001-09-26 18:24 ` Benjamin LaHaise
2001-09-26 18:48 ` Richard Gooch
2001-09-26 18:58 ` Davide Libenzi
2001-09-26 17:45 ` Dave Jones
2001-09-26 17:50 ` Alan Cox
2001-09-26 17:59 ` Dave Jones
2001-09-26 18:07 ` Alan Cox
2001-09-26 18:09 ` Padraig Brady
2001-09-26 18:22 ` Dave Jones
2001-09-26 18:24 ` Linus Torvalds
2001-09-26 18:40 ` Dave Jones
2001-09-26 19:12 ` Linus Torvalds
2001-09-26 19:04 ` George Greer
2001-09-26 18:59 ` George Greer
2001-09-26 23:26 ` David S. Miller
2001-09-27 12:10 ` Alan Cox
2001-09-27 15:38 ` Linus Torvalds
2001-09-27 17:44 ` Ingo Molnar
2001-09-27 19:41 ` David S. Miller
2001-09-27 22:59 ` Alan Cox
2001-09-25 22:03 ` Andrea Arcangeli
2001-09-25 20:24 ` Rik van Riel
2001-09-25 20:28 ` David S. Miller
2001-09-25 21:05 ` Andrew Morton
2001-09-25 21:48 ` David S. Miller
[not found] ` <200109252215.f8PMFDa02034@eng2.beaverton.ibm.com>
2001-09-25 22:26 ` David S. Miller
2001-09-26 17:42 ` Ingo Molnar
2001-09-25 22:01 ` Andrea Arcangeli
2001-09-25 22:03 ` David S. Miller
2001-09-25 22:59 ` Andrea Arcangeli
2001-09-25 20:40 ` Josh MacDonald
2001-09-25 19:25 ` Marcelo Tosatti
2001-09-25 21:57 ` Andrea Arcangeli
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