From: Dave McCracken <dmccr@us.ibm.com>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: Daniel Phillips <phillips@arcor.de>,
Andrew Morton <akpm@digeo.com>,
linux-mm@kvack.org
Subject: Re: shared pagetable benchmarking
Date: Fri, 27 Dec 2002 14:45:53 -0600 [thread overview]
Message-ID: <58520000.1041021953@[10.1.1.5]> (raw)
In-Reply-To: <Pine.LNX.4.44.0212271213180.21930-100000@home.transmeta.com>
--On Friday, December 27, 2002 12:18:23 -0800 Linus Torvalds
<torvalds@transmeta.com> wrote:
> That's clearly not 2.6.x material. But at this point I doubt that shared
> page tables are either, unless they fix something more important than
> fork() speed for processes that are larger than 16MB.
The other thing it does is eliminate the duplicate pte pages for shared
regions everywhere they span a complete pte page. While hugetlb can also
do this for some specialized applications, shared page tables will do it
for every shared region that's large enough. I dunno whether you consider
that important enough to qualify, but I figured I should point it out.
Dave McCracken
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next prev parent reply other threads:[~2002-12-27 20:45 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-20 11:11 Andrew Morton
2002-12-20 11:13 ` William Lee Irwin III
2002-12-20 16:30 ` Dave McCracken
2002-12-20 19:59 ` Andrew Morton
2002-12-23 16:15 ` Dave McCracken
2002-12-23 23:54 ` Andrew Morton
2002-12-27 9:39 ` Daniel Phillips
2002-12-27 9:58 ` Andrew Morton
2002-12-27 15:59 ` Daniel Phillips
2002-12-27 20:02 ` Linus Torvalds
2002-12-27 20:16 ` Dave McCracken
2002-12-27 20:18 ` Linus Torvalds
2002-12-27 20:45 ` Dave McCracken [this message]
2002-12-27 20:50 ` Linus Torvalds
2002-12-27 23:56 ` Daniel Phillips
2002-12-28 0:45 ` Martin J. Bligh
2002-12-28 2:34 ` Andrew Morton
2002-12-28 3:10 ` Linus Torvalds
2002-12-28 6:58 ` Andrew Morton
2002-12-28 7:39 ` Ingo Molnar
2002-12-28 7:47 ` Linus Torvalds
2002-12-28 23:28 ` Andrew Morton
2002-12-28 3:19 ` Martin J. Bligh
2002-12-23 18:19 ` Dave McCracken
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