Messages in this thread | | | Subject | Re: sysbench+mysql(oltp, readonly) 30% regression with 2.6.26-rc1 | From | Mike Galbraith <> | Date | Fri, 09 May 2008 09:32:42 +0200 |
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On Fri, 2008-05-09 at 08:51 +0200, Peter Zijlstra wrote: > > > > -rc1. Do you have the fix below applied? > > > > > > Oooh - good catch, that seems to be a post -rc1 merge. > > > > > > Yes this is required. > > > With below patch+previous_fix_weight_calc, the result is improved, but is still > > about 10% worse than the one of pure 2.6.26-rc1. > > Number of threads: 16 > > read/write requests: 6104336 (50867.11 per sec.) > > > > So puzzling - could you try -git + fix_weight_calc, as I think that is > what Mike tested and proved good on his Quad.
If he still has group scheduling enabled, my box agrees that there's a regression. I got mysql running, and tested with group scheduling both enabled and disabled, results attached. (for some reason, I can only test up to 64 threads with mysql though)
-Mike [unhandled content-type:application/pdf]
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