On 01/27/2013 06:35 PM, Borislav Petkov wrote:
> On Sun, Jan 27, 2013 at 05:36:25AM +0100, Mike Galbraith wrote:
>> With aim7 compute on 4 node 40 core box, I see stable throughput
>> improvement at tasks = nr_cores and below w. balance and powersaving.
>>
>> 3.8.0-performance 3.8.0-balance
>> 3.8.0-powersaving
>> Tasks jobs/min jti jobs/min/task real cpu jobs/min jti
>> jobs/min/task real cpu jobs/min jti jobs/min/task real
>> cpu
>> 1 432.86 100 432.8571 14.00 3.99 433.48 100
>> 433.4764 13.98 3.97 433.17 100 433.1665 13.99
>> 3.98
>> 1 437.23 100 437.2294 13.86 3.85 436.60 100
>> 436.5994 13.88 3.86 435.66 100 435.6578 13.91
>> 3.90
>> 1 434.10 100 434.0974 13.96 3.95 436.29 100
>> 436.2851 13.89 3.89 436.29 100 436.2851 13.89
>> 3.87
>> 5 2400.95 99 480.1902 12.62 12.49 2554.81 98
>> 510.9612 11.86 7.55 2487.68 98 497.5369 12.18
>> 8.22
>> 5 2341.58 99 468.3153 12.94 13.95 2578.72 99
>> 515.7447 11.75 7.25 2527.11 99 505.4212 11.99
>> 7.90
>> 5 2350.66 99 470.1319 12.89 13.66 2600.86 99
>> 520.1717 11.65 7.09 2508.28 98 501.6556 12.08
>> 8.24
>> 10 4291.78 99 429.1785 14.12 40.14 5334.51 99
>> 533.4507 11.36 11.13 5183.92 98 518.3918 11.69
>> 12.15
>> 10 4334.76 99 433.4764 13.98 38.70 5311.13 99
>> 531.1131 11.41 11.23 5215.15 99 521.5146 11.62
>> 12.53
>> 10 4273.62 99 427.3625 14.18 40.29 5287.96 99
>> 528.7958 11.46 11.46 5144.31 98 514.4312 11.78
>> 12.32
>> 20 8487.39 94 424.3697 14.28 63.14 10594.41 99
>> 529.7203 11.44 23.72 10575.92 99 528.7958 11.46
>> 22.08
>> 20 8387.54 97 419.3772 14.45 77.01 10575.92 98
>> 528.7958 11.46 23.41 10520.83 99 526.0417 11.52
>> 21.88
>> 20 8713.16 95 435.6578 13.91 55.10 10659.63 99
>> 532.9815 11.37 24.17 10539.13 99 526.9565 11.50
>> 22.13
>> 40 16786.70 99 419.6676 14.44 170.08 19469.88 98
>> 486.7470 12.45 60.78 19967.05 98 499.1763 12.14
>> 51.40
>> 40 16728.78 99 418.2195 14.49 172.96 19627.53 98
>> 490.6883 12.35 65.26 20386.88 98 509.6720 11.89
>> 46.91
>> 40 16763.49 99 419.0871 14.46 171.42 20033.06 98
>> 500.8264 12.10 51.44 20682.59 98 517.0648 11.72
>> 42.45
>
> Ok, this is sick. How is balance and powersaving better than perf? Both
> have much more jobs per minute than perf; is that because we do pack
> much more tasks per cpu with balance and powersaving?
Maybe it is due to the lazy balancing on balance/powersaving. You can
check the CS times in /proc/pid/status.
>
> Thanks.
>
--
Thanks
Alex
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