From: David Mosberger <davidm@napali.hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [PATCH] Convert pgtable cache to slab
Date: Tue, 15 Feb 2005 20:03:22 +0000 [thread overview]
Message-ID: <16914.21898.79217.485076@napali.hpl.hp.com> (raw)
In-Reply-To: <yq1wtxnprkq.fsf@wilson.mkp.net>
>>>>> On Tue, 15 Feb 2005 13:59:45 -0600, Robin Holt <holt@sgi.com> said:
>> I certainly don't want to switch my machines to 4-levels. There
>> is zero need for that on the machines I use, so why pay the
>> overhead of an extra level?
Robin> I missed the why the extra level question. That part is
Robin> motivated by some large MPI jobs need a fourth level to get a
Robin> large enough single mapping to cover their entire dataset.
Robin> We have already tripped this limitation for a couple of our
Robin> really large customers.
What I'm saying is that the default probably should stay at 3-levels.
Optimizing ia64 linux _just_ for "really large customers" would be
a bad direction to go in.
--david
next prev parent reply other threads:[~2005-02-15 20:03 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-18 22:52 [PATCH] Convert pgtable cache to slab Martin K. Petersen
2004-10-19 4:08 ` Luck, Tony
2004-10-19 15:59 ` Martin K. Petersen
2005-02-10 20:29 ` Robin Holt
2005-02-10 20:38 ` Luck, Tony
2005-02-11 18:35 ` Robin Holt
2005-02-11 18:51 ` Luck, Tony
2005-02-11 19:33 ` Robin Holt
2005-02-14 16:33 ` Robin Holt
2005-02-14 19:18 ` Luck, Tony
2005-02-15 12:02 ` Robin Holt
2005-02-15 18:07 ` David Mosberger
2005-02-15 18:29 ` Luck, Tony
2005-02-15 19:31 ` Robin Holt
2005-02-15 19:46 ` David Mosberger
2005-02-15 19:57 ` Robin Holt
2005-02-15 19:59 ` Robin Holt
2005-02-15 20:03 ` David Mosberger [this message]
2005-02-15 20:08 ` Robin Holt
2005-02-15 20:15 ` William Lee Irwin III
2005-02-15 20:25 ` Luck, Tony
2005-02-15 20:26 ` David Mosberger
2005-02-17 17:22 ` Jack Steiner
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