Messages in this thread | | | From | Con Kolivas <> | Subject | Re: sched domains kernbench improvements | Date | Sat, 28 Feb 2004 21:59:58 +1100 |
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Hi Nick
> So it is more a matter of tuning than anything fundamental
Geez I know how you feel... :-D
I tried it on the X440 with sched smt disabled
better than before but still slower than vanilla on half load; however better than vanilla on optimal and full load now! I wonder whether the worse result on half load is as relevant since this is 8x HT cpus?
Full details:
vanilla: Average Half Load Run: Elapsed Time 120.186 User Time 800.614 System Time 92.604 Percent CPU 742.4 Context Switches 10430.6 Sleeps 26554.6
Average Optimum Load Run: Elapsed Time 81.67 User Time 1009.54 System Time 113.614 Percent CPU 1374.6 Context Switches 63728 Sleeps 41399.4
Average Maximum Load Run: Elapsed Time 83.148 User Time 1014.54 System Time 123.806 Percent CPU 1368.4 Context Switches 45229.6 Sleeps 22077.6
-mm no SMT (sorry didnt do max load): Average Half Load Run: Elapsed Time 133.51 User Time 799.268 System Time 92.784 Percent CPU 669 Context Switches 19340.8 Sleeps 24427.4
Average Optimum Load Run: Elapsed Time 81.486 User Time 1006.37 System Time 106.952 Percent CPU 1366.8 Context Switches 33939 Sleeps 32453.4
-mm less idle: Average Half Load Run: Elapsed Time 128.23 User Time 819.256 System Time 93.09 Percent CPU 713 Context Switches 18566.2 Sleeps 24663.8
Average Optimum Load Run: Elapsed Time 79.844 User Time 1004.26 System Time 106.74 Percent CPU 1391.8 Context Switches 33718 Sleeps 33007.8
Average Maximum Load Run: Elapsed Time 81.47 User Time 1008.32 System Time 119.652 Percent CPU 1384.4 Context Switches 31296.6 Sleeps 22667.6
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