Messages in this thread | | | From | "Chen, Kenneth W" <> | Subject | RE: Delete scheduler SD_WAKE_AFFINE and SD_WAKE_BALANCE flags | Date | Thu, 28 Jul 2005 16:48:20 -0700 |
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Nick Piggin wrote on Thursday, July 28, 2005 4:35 PM > Wake balancing provides an opportunity to provide some input bias > into the load balancer. > > For example, if you started 100 pairs of tasks which communicate > through a pipe. On a 2 CPU system without wake balancing, probably > half of the pairs will be on different CPUs. With wake balancing, > it should be much better.
Shouldn't the pipe code use synchronous wakeup?
> I hear you might be having problems with recent 2.6.13 kernels? If so, > it would be really good to have a look that before 2.6.13 goes out the > door.
Yes I do :-(, apparently bumping up cache_hot_time won't give us the performance boost we used to see.
- Ken
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