Re: [PATCH] Prefaulting
From: Andrew Morton
Date: Fri Mar 11 2005 - 20:24:20 EST
Christoph Lameter <clameter@xxxxxxx> wrote:
> This patch allows to aggregate multiple page faults into a single one. It
> does that by detecting that an application generates a sequence of page
> Results that show the impact of this patch are available at
There are a lot of numbers there. Was there an executive summary?
>From a quick peek it seems that the patch makes negligible difference for a
kernel compilation when prefaulting 1-2 pages and slows the workload down
quite a lot when prefaulting up to 16 pages.
And for the uniprocessor "200 Megabyte allocation without prezeroing.
Single thread." workload it appears that the prefault patch slowed it down
Am I misreading the results? If not, it's a bit disappointing.
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