Re: [PATCH v2] sched: wake-affine throttle
From: Michael Wang
Date: Wed May 22 2013 - 22:12:48 EST
On 05/22/2013 10:55 PM, Mike Galbraith wrote:
> On Wed, 2013-05-22 at 17:25 +0800, Michael Wang wrote:
>
>> I've not test the hackbench with wakeup-buddy before, will do it this
>> time, I suppose the 15% illegal income will suffered, anyway, it's
>> illegal :)
>
Thanks, Mike, these are very helpful data ;-)
> On a 4 socket 40 core (+SMT) box, hackbench wasn't too happy.
I'm not sure whether this is caused by the SOFT IRQ case, I have some
idea in mind which may could help to solve that issue, but if this huge
regression is caused by other reasons...
Anyway, I will rework on the idea and let's see whether we could make
things better :)
Regards,
Michael Wang
>
> defaultx = wakeup buddy
>
> tbench 30 localhost
> 1 5 10 20 40 80 160 320
> 3.10.0-default 188.13 953.03 1860.03 3180.93 5378.34 10826.06 11342.90 11651.30
> 3.10.0-defaultx 187.26 934.55 1859.30 3160.29 5016.35 12477.15 12567.05 12068.47
>
> hackbench -l 400 -g 400
> 3.10.0-default Time: 3.919 4.250 4.116
> 3.10.0-defaultx Time: 9.074 10.985 9.849
>
> aim7 compute
> AIM Multiuser Benchmark - Suite VII "1.1" 3.10.0-default AIM Multiuser Benchmark - Suite VII "1.1" 3.10.0-defaultx
>
> Tasks Jobs/Min JTI Real CPU Jobs/sec/task Tasks Jobs/Min JTI Real CPU Jobs/sec/task
> 1 428.0 100 14.2 4.1 7.1328 1 428.9 100 14.1 4.1 7.1479
> 1 417.9 100 14.5 4.1 6.9655 1 430.4 100 14.1 4.0 7.1733
> 1 427.7 100 14.2 4.2 7.1277 1 424.7 100 14.3 4.2 7.0778
> 5 2350.7 99 12.9 13.8 7.8355 5 2156.6 99 14.1 19.8 7.1886
> 5 2422.1 99 12.5 12.1 8.0735 5 2155.0 99 14.1 19.7 7.1835
> 5 2189.3 98 13.8 18.3 7.2977 5 2108.6 99 14.4 21.4 7.0285
> 10 4515.6 93 13.4 27.6 7.5261 10 4529.1 96 13.4 29.5 7.5486
> 10 4708.6 96 12.9 24.3 7.8477 10 4597.9 96 13.2 26.9 7.6631
> 10 4636.6 96 13.1 25.7 7.7276 10 5197.3 98 11.7 14.8 8.6621
> 20 8053.2 95 15.1 78.1 6.7110 20 9431.9 98 12.8 49.1 7.8599
> 20 8250.5 92 14.7 67.5 6.8754 20 7973.7 97 15.2 93.4 6.6447
> 20 8178.1 97 14.8 78.5 6.8151 20 8145.2 95 14.9 78.4 6.7876
> 40 17413.8 94 13.9 88.6 7.2557 40 16312.2 92 14.9 115.6 6.7968
> 40 16775.1 93 14.5 111.6 6.9896 40 17070.4 94 14.2 110.6 7.1127
> 40 16031.7 93 15.1 147.1 6.6799 40 17578.0 94 13.8 96.9 7.3241
> 80 33666.7 95 14.4 138.4 7.0139 80 33854.7 96 14.3 177.9 7.0531
> 80 33949.6 97 14.3 128.0 7.0728 80 34164.9 96 14.2 146.4 7.1177
> 80 35752.2 96 13.6 159.1 7.4484 80 33807.5 96 14.3 127.6 7.0432
> 160 74814.8 98 13.0 149.8 7.7932 160 75162.8 98 12.9 148.6 7.8295
> 160 74015.3 97 13.1 149.5 7.7099 160 74642.0 98 13.0 168.2 7.7752
> 160 73621.9 98 13.2 146.3 7.6689 160 75572.9 98 12.8 163.6 7.8722
> 320 139210.3 96 13.9 280.1 7.2505 320 139010.8 97 14.0 282.4 7.2401
> 320 135135.9 96 14.3 277.8 7.0383 320 139611.2 96 13.9 282.2 7.2714
> 320 139110.5 96 13.9 280.4 7.2453 320 138514.3 97 14.0 281.0 7.2143
> 640 223538.9 98 17.4 577.2 5.8213 640 224704.5 95 17.3 567.3 5.8517
> 640 224055.5 97 17.3 575.7 5.8348 640 222385.3 95 17.4 580.1 5.7913
> 640 225488.4 96 17.2 566.3 5.8721 640 225882.4 93 17.2 563.0 5.8824
>
>
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