Messages in this thread | | | Date | Wed, 03 Sep 2003 09:50:19 +1000 | From | Nick Piggin <> | Subject | Re: [PATCH] Nick's scheduler policy v10 |
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Martin J. Bligh wrote:
>>>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". > >
This didn't explain the huge idle time increases on volanomark and SPECjbb I think.
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