From: Linus Torvalds <torvalds@transmeta.com>
To: Dave McCracken <dmccr@us.ibm.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 12:50:25 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.44.0212271244390.771-100000@home.transmeta.com> (raw)
In-Reply-To: <58520000.1041021953@[10.1.1.5]>
On Fri, 27 Dec 2002, Dave McCracken wrote:
>
> 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.
I don't consider it important enough to qualify unless there are some real
loads where it really matters. I can well imagine that such loads exist
(where low-memory usage by page tables is a real problem), but I'd like to
have that confirmed as a bug-report and that the sharing really does fix
it.
In other words, I can believe that the sharing is 2.6.x material, but
considering the fundamental nature of it I want it to be a confirmed
bug-fix, not a feature.
Linus
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next prev parent reply other threads:[~2002-12-27 20:50 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
2002-12-27 20:50 ` Linus Torvalds [this message]
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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