Re: [PATCH] Nick's scheduler policy v10

From: Martin J. Bligh
Date: Tue Sep 02 2003 - 12:11:43 EST


>> Not convinced of that - mm performs worse than mainline for me.
>
> Well, one of Con's patches caused a lot of idle time on volanomark.
> The reason for the change was unclear. I guess either a fairness or
> wakeup latency change (yes, it was a very scientific process, ahem).
>
> Anyway, in the process of looking at the load balancing, we found
> and fixed a problem (although it might now possibly over balance).
> This did cure most of the idle problems.
>
> So it could just be small changes causing things to go out of whack.
> I will try to get better data after (if ever) the thing is working
> nicely on the desktop.

I think Con and I worked out that the degredations I was seeing
(on kernbench and SDET) were due to (in his words) "my hacks throwing the
cc cpu hogs onto the expired array more frequently".

M.

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