Messages in this thread | | | From | "Chen, Kenneth W" <> | Subject | RE: Industry db benchmark result on recent 2.6 kernels | Date | Thu, 31 Mar 2005 21:14:59 -0800 |
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Ingo Molnar wrote on Thursday, March 31, 2005 8:52 PM > the current scheduler queue in -mm has some experimental bits as well > which will reduce the amount of balancing. But we cannot just merge them > an bloc right now, there's been too much back and forth in recent > kernels. The safe-to-merge-for-2.6.12 bits are already in -BK.
I agree, please give me some time to go through these patches on our db setup.
> the current defaults for cache_hot_time are 10 msec for NUMA domains, > and 2.5 msec for SMP domains. Clearly too low for CPUs with 9MB cache. > Are you increasing cache_hot_time in your experiment? If that solves > most of the problem that would be an easy thing to fix for 2.6.12.
Yes, we are increasing the number in our experiments. It's in the queue and I should have a result soon.
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