Messages in this thread | | | Subject | Re: [PATCH v7 0/8] Tunable sched_mc_power_savings=n | From | Mike Galbraith <> | Date | Tue, 06 Jan 2009 18:48:37 +0100 |
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On Tue, 2009-01-06 at 20:37 +0530, Vaidyanathan Srinivasan wrote:
> Hi Mike, > > Thanks for the detailed benchmark reports. Glad to hear that > sched_mc=2 is helping in most scenarios. Though we would be tempted to > make it default, I would still like to default to zero in order to > provide base line performance. I would expect end users to flip the > settings to sched_mc=2 if it helps their workload in terms of > performance and/or power savings.
The mysql+oltp peak loss is there either way, but with 2, mid range throughput is ~28 baseline. High end (yawn) is better, and the nfs kbuild performs better than baseline.
Baseline performance, at least wrt mysql+oltp doesn't seem to be an option. Not my call. More testing and more testers required I suppose.
-Mike
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