Re: [PATCH -mm 5/5] swsusp: Use memory bitmaps during resume

From: Andrew Morton
Date: Sun Aug 13 2006 - 18:02:48 EST

On Thu, 10 Aug 2006 15:23:41 +0200
"Rafael J. Wysocki" <rjw@xxxxxxx> 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

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