From: Andrew Morton <akpm@osdl.org>
To: Andrea Arcangeli <andrea@suse.de>
Cc: hugh@veritas.com, iwamoto@valinux.co.jp,
linux-kernel@vger.kernel.org, lhms-devel@lists.sourceforge.net
Subject: Re: [RFC] Changing COW detection to be memory hotplug friendly
Date: Mon, 14 Feb 2005 19:17:35 -0800 [thread overview]
Message-ID: <20050214191735.6330ce1f.akpm@osdl.org> (raw)
In-Reply-To: <20050214214148.GM13712@opteron.random>
Andrea Arcangeli <andrea@suse.de> wrote:
>
> you're right something might be different now
> that we don't follow a swapout virtual address space order anymore
There's a patch in -mm which attempts to do so, and afair, succeeds.
However the performance seems to be crappy. Its main benefit at present
is in reducing worst-case scheduling latencies (scan_swap_map).
ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.11-rc3/2.6.11-rc3-mm2/broken-out/swapspace-layout-improvements-fix.patch
next prev parent reply other threads:[~2005-02-15 3:18 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-03 3:56 IWAMOTO Toshihiro
2005-02-07 21:24 ` Hugh Dickins
2005-02-08 16:26 ` Hugh Dickins
2005-02-10 7:59 ` IWAMOTO Toshihiro
2005-02-10 19:05 ` Andrea Arcangeli
2005-02-10 19:16 ` Dave Hansen
2005-02-10 19:41 ` Andrea Arcangeli
2005-02-10 20:19 ` Hugh Dickins
2005-02-10 20:40 ` Andrea Arcangeli
2005-02-11 7:23 ` Hugh Dickins
2005-02-11 8:52 ` Andrea Arcangeli
2005-02-11 13:20 ` Hugh Dickins
2005-02-14 17:41 ` Andrea Arcangeli
2005-02-14 18:36 ` Hugh Dickins
2005-02-14 21:41 ` Andrea Arcangeli
2005-02-15 3:17 ` Andrew Morton [this message]
2005-02-09 9:08 ` IWAMOTO Toshihiro
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