From: "David S. Miller" <davem@redhat.com>
To: akpm@zip.com.au
Cc: dipankar@in.ibm.com, marcelo@connectiva.com.br,
riel@connectiva.com.br, andrea@suse.de, torvalds@transmeta.com,
linux-kernel@vger.kernel.org, hawkes@engr.sgi.com
Subject: Re: Locking comment on shrink_caches()
Date: Tue, 25 Sep 2001 23:57:18 -0700 (PDT) [thread overview]
Message-ID: <20010925.235718.95903768.davem@redhat.com> (raw)
In-Reply-To: <3BB16834.4393EEA3@zip.com.au>
In-Reply-To: <20010926103424.A8893@in.ibm.com> <3BB16834.4393EEA3@zip.com.au>
From: Andrew Morton <akpm@zip.com.au>
Date: Tue, 25 Sep 2001 22:31:32 -0700
Here are kumon's test results from March, with and without
the hashed lock patch:
Please elaborate on what the webbench-3.0 static gets was
really doing.
Was this test composed of multiple accesses to the same or a small set
of files? If so, that is indeed the case where the page cache locking
patches won't help at all.
The more diversified the set of files being accessed, the greater the
gain from the locking changes. You have to encourage the cpus at
least have a chance at accessing different hash chains :-)
Franks a lot,
David S. Miller
davem@redhat.com
next prev parent reply other threads:[~2001-09-26 6:58 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-26 5:04 Dipankar Sarma
2001-09-26 5:31 ` Andrew Morton
2001-09-26 7:08 ` Dipankar Sarma
2001-09-26 16:52 ` John Hawkes
2001-09-26 6:57 ` David S. Miller [this message]
[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 20:40 ` Josh MacDonald
2001-09-25 19:25 ` Marcelo Tosatti
2001-09-25 20:15 ` David S. Miller
2001-09-25 19:02 ` Marcelo Tosatti
2001-09-25 20:24 ` Rik van Riel
2001-09-25 22:26 ` David S. Miller
2001-09-26 17:42 ` Ingo Molnar
2001-09-25 20:28 ` David S. Miller
2001-09-25 21:05 ` Andrew Morton
2001-09-25 21:48 ` David S. Miller
2001-09-25 20:29 ` David S. Miller
2001-09-25 21:00 ` Benjamin LaHaise
2001-09-25 22:03 ` Andrea Arcangeli
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 17:45 ` 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 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 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 22:01 ` Andrea Arcangeli
2001-09-25 22:03 ` David S. Miller
2001-09-25 22:59 ` Andrea Arcangeli
2001-09-25 21:57 ` Andrea Arcangeli
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