From: "Martin J. Bligh" <Martin.Bligh@us.ibm.com>
To: Rik van Riel <riel@conectiva.com.br>
Cc: Linus Torvalds <torvalds@transmeta.com>,
Craig Kulesa <ckulesa@as.arizona.edu>,
Ingo Molnar <mingo@elte.hu>, Dave Jones <davej@suse.de>,
Daniel Phillips <phillips@bonn-fries.net>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
rwhron@earthlink.net
Subject: Re: [PATCH] (1/2) reverse mapping VM for 2.5.23 (rmap-13b)
Date: Mon, 24 Jun 2002 14:56:14 -0700 [thread overview]
Message-ID: <752101.1024930574@mbligh.des.sequent.com> (raw)
In-Reply-To: <Pine.LNX.4.44L.0206241837400.18418-100000@imladris.surriel.com>
>> A quick rough calculation indicates that the Oracle test I was helping
>> out with was consuming almost 10Gb of PTEs without rmap - 30Gb for
>> overhead doesn't sound like fun to me ;-(
>
> 10 GB is already bad enough that rmap isn't so much causing
> a problem but increasing an already untolerable problem.
Yup, I'm not denying there's an large existing problem there, but
at least we can fit it into memory right now. Just something to bear
in mind when you're benchmarking.
> Now we just need volunteers for the implementation ;)
We have some people looking at it already, but it's not the world's
most trivial problem to solve ;-)
M.
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next prev parent reply other threads:[~2002-06-24 21:56 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-19 11:18 Craig Kulesa
2002-06-19 16:18 ` Andrew Morton
2002-06-19 17:00 ` Daniel Phillips
2002-06-19 17:11 ` Dave Jones
2002-06-19 17:35 ` Rik van Riel
2002-06-19 19:53 ` Ingo Molnar
2002-06-19 20:21 ` Craig Kulesa
2002-06-19 20:24 ` Linus Torvalds
2002-06-20 12:25 ` VM benchmarks for 2.5 (mainline & rmap patches) Craig Kulesa
2002-06-24 21:34 ` [PATCH] (1/2) reverse mapping VM for 2.5.23 (rmap-13b) Martin J. Bligh
2002-06-24 21:39 ` Rik van Riel
2002-06-24 21:56 ` Martin J. Bligh [this message]
2002-07-04 5:19 ` Daniel Phillips
2002-06-24 15:02 ` Rik van Riel
2002-06-19 19:04 ` Steven Cole
2002-06-19 22:44 ` William Lee Irwin III
2002-06-20 12:08 ` [PATCH] Updated rmap VM for 2.5.23 (SMP, preempt fixes) Craig Kulesa
2002-06-20 12:45 ` Craig Kulesa
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