Messages in this thread | | | Date | Mon, 28 Apr 2008 15:55:00 -0400 | From | Rik van Riel <> | Subject | Re: [PATCH -mm 00/15] VM pageout scalability improvements (V6) |
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On Mon, 28 Apr 2008 14:18:35 -0400 Rik van Riel <riel@redhat.com> wrote:
> This patch series improves VM scalability
Here is some (absolutely minimal) performance data.
Running "fillmem 16000" on my 16 GB test system puts the system about 800MB into swap. Both run time and CPU use are improved with this patch series. The numbers are an average of about a dozen runs.
2.6.25-mm1: real 1m31 user 0m11 sys 0m32
2.5.25-mm1-splitvm: real 1m02 user 0m11 sys 0m22
This does not account for kswapd CPU use, which accumulated to about 56 seconds total in the splitvm kernel, but around 5 minutes on 2.6.25-mm1.
I will make a kernel RPM with the split LRU patch set available so other people can easily do performance tests.
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