00000000 total 6309908 36.9433
c01089b0 default_idle 6187707 96682.9219
Not all that much room for improvment with CPU efficiency ;-)
M.
--On Friday, March 28, 2003 14:15:24 -0800 Mary Edie Meredith <maryedie@osdl.org> wrote:
> We have now comparison data for DBT-2 (readprofile included) from
> multiple kernels. To provide a quick comparison for those not
> familiar with DBT-2, we've compared the results, using 2.5.65 stock
> as the baseline (bigger is better).
>
> Score Score
> Kernel Cached Non-Cached
> 2.5.65 base 100 (baseline) 100
> 2.5.65-mjb2 HZ=100 90.95 99.26
> 2.5.65-mjb2 HZ=1000 102.38 99.92
> 2.5.65-osdl1 101.69 99.89
> 2.5.64-osdl1 104.16 99.67
>
> HZ is defined as 1000 in the base and osdl1 kernels. mjb2 kernel uses
> Andrew Morton / Dave Hansen patch making HZ a config option of
> 100 Hz or 1000 Hz). Also we reversed out the 400-shpte patch.
>
> Link to .config, readprofiles, metric info, raw data:
>
> http://www.osdl.org/projects/dbt2dev/results/8way/MJB65/8way_2_5_65.html
>
>
> Guided tour:
>
> At the top of the screen, you will see a row that includes the .config
> and the readprofile data for each kernel tested.
>
> Next is the list of runs of each type, the average metric (Green
> line) bigger numbers are better. The first set of these is the
> cached workload case, second is non-cached.
>
> Click on "Raw data" for the vmstat, iostat raw info from each run of
> that kernel and workload type.
>
>
> Just some things noticed looking at the vmstat plotted data:
>
> Notible difference in processes waiting for run time, all 2.5.65
> are high relative to 2.5.64(the last frame) for the cached case
> (first row of frames) in these plots:
> http://www.osdl.org/projects/dbt2dev/results/8way/MJB65/r.html
>
>
> Of course, interrupts are down for the HZ=100 case (second frame,
> both rows):
> http://www.osdl.org/projects/dbt2dev/results/8way/MJB65/In.html
>
> Context switches per second slightly down to for HZ=100:
> http://www.osdl.org/projects/dbt2dev/results/8way/MJB65/cs.html
>
> Moving on to 2.5.66 to escape problems with "sleep".
>
> Mary Meredith
> Mark Wong
> Cliff White
>
> Open Source Development Lab
> www.osdl.org
> ~
> --
>
>
>
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