From: Nick Piggin <npiggin@suse.de>
To: Matt Mackall <mpm@selenic.com>
Cc: William Lee Irwin III <wli@holomorphy.com>,
Christoph Lameter <clameter@sgi.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux Memory Management List <linux-mm@kvack.org>,
linux-arch@vger.kernel.org
Subject: Re: [rfc] increase struct page size?!
Date: Tue, 22 May 2007 03:08:23 +0200 [thread overview]
Message-ID: <20070522010823.GC27743@wotan.suse.de> (raw)
In-Reply-To: <20070521224316.GC11166@waste.org>
On Mon, May 21, 2007 at 05:43:16PM -0500, Matt Mackall wrote:
> On Mon, May 21, 2007 at 11:27:42AM +0200, Nick Piggin wrote:
> >
> > ... yeah, something like that would bypass
>
> As long as we're throwing out crazy unpopular ideas, try this one:
>
> Divide struct page in two such that all the most commonly used
> elements are in one piece that's nicely sized and the rest are in
> another. Have two parallel arrays containing these pieces and accessor
> functions around the unpopular bits.
>
> Whether a sensible divide between popular and unpopular bits isn't
> clear to me. But hey, I said it was crazy.
That would be unpopular with pagecache, because that uses pretty well
all fields.
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next prev parent reply other threads:[~2007-05-22 1:08 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-18 4:08 Nick Piggin
2007-05-18 4:47 ` David Miller, Nick Piggin
2007-05-18 5:12 ` Nick Piggin
2007-05-18 5:22 ` David Miller, Nick Piggin
2007-05-18 5:31 ` Nick Piggin
2007-05-18 18:15 ` Christoph Lameter
2007-05-18 7:19 ` Andrew Morton
2007-05-18 7:32 ` Nick Piggin
2007-05-18 7:43 ` Andrew Morton
2007-05-18 7:59 ` Nick Piggin
2007-05-18 9:42 ` David Howells
2007-05-19 1:30 ` Nick Piggin
2007-05-18 12:06 ` Andi Kleen
2007-05-18 15:42 ` Hugh Dickins
2007-05-19 1:22 ` Nick Piggin
2007-05-19 17:53 ` William Lee Irwin III
2007-05-20 22:50 ` Matthew Wilcox
2007-05-18 18:14 ` Christoph Lameter
2007-05-18 20:37 ` Luck, Tony
2007-05-21 6:28 ` KAMEZAWA Hiroyuki
2007-05-19 1:25 ` Nick Piggin
2007-05-19 2:03 ` [rfc] increase struct page size?! (now sparsemem vmemmap) Christoph Lameter
2007-05-19 15:43 ` Andy Whitcroft
2007-05-19 18:15 ` [rfc] increase struct page size?! William Lee Irwin III
2007-05-19 18:25 ` Christoph Lameter
2007-05-20 4:10 ` Eric Dumazet
2007-05-20 12:56 ` Andi Kleen
2007-05-21 17:08 ` Christoph Lameter
2007-05-22 0:30 ` KAMEZAWA Hiroyuki
2007-05-22 0:38 ` Christoph Lameter
2007-05-22 0:58 ` KAMEZAWA Hiroyuki
2007-05-22 9:44 ` Geert Uytterhoeven
2007-05-19 22:09 ` Andrew Morton
2007-05-20 7:26 ` William Lee Irwin III
2007-05-21 9:12 ` Helge Hafting
2007-05-21 9:45 ` Nick Piggin
2007-05-20 5:22 ` Nick Piggin
2007-05-20 8:46 ` William Lee Irwin III
2007-05-20 9:25 ` Nick Piggin
2007-05-21 8:08 ` William Lee Irwin III
2007-05-21 9:27 ` Nick Piggin
2007-05-21 11:26 ` William Lee Irwin III
2007-05-22 0:52 ` Nick Piggin
2007-05-21 22:43 ` Matt Mackall
2007-05-22 1:08 ` Nick Piggin [this message]
2007-05-22 1:13 ` Christoph Lameter
2007-05-22 1:39 ` William Lee Irwin III
2007-05-22 1:57 ` Nick Piggin
2007-05-22 5:04 ` William Lee Irwin III
2007-05-22 6:24 ` Nick Piggin
2007-05-22 10:59 ` William Lee Irwin III
2007-05-21 9:31 ` Eric Dumazet
2007-05-21 17:06 ` Christoph Lameter
2007-05-20 17:13 ` Andrea Arcangeli
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