Re: [patch v6 8/8] sched: remove blocked_load_avg in tg

From: Jason Low
Date: Wed May 29 2013 - 13:01:02 EST


On Fri, 2013-05-10 at 23:17 +0800, Alex Shi wrote:
> blocked_load_avg sometime is too heavy and far bigger than runnable load
> avg. that make balance make wrong decision. So better don't consider it.
>
> Signed-off-by: Alex Shi <alex.shi@xxxxxxxxx>

Hi Alex,

I have been testing these patches with a Java server workload on an 8
socket (80 core) box with Hyperthreading enabled, and I have been seeing
good results with these patches.

When using a 3.10-rc2 tip kernel with patches 1-8, there was about a 40%
improvement in performance of the workload compared to when using the
vanilla 3.10-rc2 tip kernel with no patches. When using a 3.10-rc2 tip
kernel with just patches 1-7, the performance improvement of the
workload over the vanilla 3.10-rc2 tip kernel was about 25%.

Tested-by: Jason Low <jason.low2@xxxxxx>

Thanks,
Jason

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