From: David Mosberger-Tang <David.Mosberger@acm.org>
To: linux-ia64@vger.kernel.org
Subject: Re: [RFC] 4-level page table directories.
Date: Wed, 02 Nov 2005 18:59:04 +0000 [thread overview]
Message-ID: <ed5aea430511021059s3d486d68yb2a8a360756449c6@mail.gmail.com> (raw)
In-Reply-To: <20051027041709.GA13193@attica.americas.sgi.com>
Robin,
Thanks for running all those benchmarks.
On 11/2/05, Robin Holt <holt@sgi.com> wrote:
> Does anybody have any objections to making 4 level the default?
My concern is that 4-level PT really isn't needed on ia64 for all but
the largest machines and adding a 4-th level cannot possibly help
performance and definitely has a (small) cost. I see that you have a
CONFIG option now, which is good. I don't have a strong opinion what
should be the default. Longer term, it would be good to settle on one
implementation, so perhaps it's not a bad idea to make 4-level the
default and see if anyone complains about performance regressions.
--david
--
Mosberger Consulting LLC, voice/fax: 510-744-9372,
http://www.mosberger-consulting.com/
35706 Runckel Lane, Fremont, CA 94536
next prev parent reply other threads:[~2005-11-02 18:59 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-27 4:17 [RFC] 4-level page table directories Robin Holt
2005-10-28 5:19 ` Ian Wienand
2005-10-28 11:19 ` Robin Holt
2005-10-28 23:23 ` Luck, Tony
2005-10-28 23:55 ` Chen, Kenneth W
2005-10-29 0:49 ` Grant Grundler
2005-10-29 2:18 ` David Mosberger-Tang
2005-11-01 12:13 ` Robin Holt
2005-11-01 15:41 ` David Mosberger-Tang
2005-11-02 10:35 ` Robin Holt
2005-11-02 13:26 ` Robin Holt
2005-11-02 16:11 ` Luck, Tony
2005-11-02 16:23 ` Robin Holt
2005-11-02 16:30 ` Luck, Tony
2005-11-02 17:16 ` Robin Holt
2005-11-02 18:59 ` David Mosberger-Tang [this message]
2005-11-02 22:26 ` Ian Wienand
2005-11-03 1:36 ` Gerald Pfeifer
2005-11-03 1:53 ` Chen, Kenneth W
2005-11-03 3:55 ` Jack Steiner
2005-11-03 16:36 ` Robin Holt
2005-11-03 19:59 ` Chen, Kenneth W
2005-11-04 17:58 ` Luck, Tony
2005-11-04 21:37 ` Robin Holt
2005-11-04 21:42 ` Chen, Kenneth W
2005-11-04 22:50 ` Chen, Kenneth W
2005-11-07 21:18 ` Luck, Tony
2005-11-08 0:22 ` Rohit Seth
2005-11-08 12:43 ` Robin Holt
2005-11-08 18:23 ` Boehm, Hans
2005-11-08 18:52 ` Magenheimer, Dan (HP Labs Fort Collins)
2005-11-08 18:56 ` Rohit Seth
2005-11-08 19:36 ` Robin Holt
2005-11-08 20:07 ` Chen, Kenneth W
2005-11-08 20:27 ` Chen, Kenneth W
2005-11-08 22:09 ` Ian Wienand
2005-11-08 23:58 ` Gerald Pfeifer
2005-11-09 0:08 ` David Mosberger-Tang
2005-11-09 0:22 ` Rohit Seth
2005-11-09 0:46 ` Magenheimer, Dan (HP Labs Fort Collins)
2005-11-09 1:18 ` Chen, Kenneth W
2005-11-09 12:11 ` Robin Holt
2005-11-09 14:29 ` Robin Holt
2005-11-09 18:22 ` Chen, Kenneth W
2005-11-09 18:39 ` Luck, Tony
2005-11-10 0:03 ` Gerald Pfeifer
2005-11-10 0:23 ` Jack Steiner
2005-11-10 0:27 ` Luck, Tony
2005-11-10 2:54 ` Jack Steiner
2005-11-10 9:13 ` Robin Holt
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