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Date: Sun, 13 Aug 2006 15:04:57 -0700
From: Andrew Morton <akpm@osdl.org>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: LKML <linux-kernel@vger.kernel.org>, Pavel Machek <pavel@ucw.cz>
Subject: Re: [PATCH -mm 5/5] swsusp: Use memory bitmaps during resume
Message-Id: <20060813150457.43ba5893.akpm@osdl.org>
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On Thu, 10 Aug 2006 15:23:41 +0200
"Rafael J. Wysocki" <rjw@sisk.pl> wrote:

> Make swsusp use memory bitmaps to store its internal information during the
> resume phase of the suspend-resume cycle.

This patch makes the resume-time disk IO go all slow again.

Time to read 80k pages:

2.6.18-rc4:				24 seconds
2.6.18-rc4+akpm-speedups:		10 seconds
2.6.18-rc4+akpm-speedups+this-patch:	24 seconds