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SubjectRe: [PATCH v12 00/31] Speculative page faults
Hi Laurent,

I downloaded your script and run it on Intel 2s skylake platform with spf-v12 patch
serials.

Here attached the output results of this script.

The following comparison result is statistics from the script outputs.

a). Enable THP
SPF_0 change SPF_1
will-it-scale.page_fault2.per_thread_ops 2664190.8 -11.7% 2353637.6
will-it-scale.page_fault3.per_thread_ops 4480027.2 -14.7% 3819331.9


b). Disable THP
SPF_0 change SPF_1
will-it-scale.page_fault2.per_thread_ops 2653260.7 -10% 2385165.8
will-it-scale.page_fault3.per_thread_ops 4436330.1 -12.4% 3886734.2


Thanks,
Haiyan Song


On Fri, Jun 14, 2019 at 10:44:47AM +0200, Laurent Dufour wrote:
> Le 14/06/2019 à 10:37, Laurent Dufour a écrit :
> > Please find attached the script I run to get these numbers.
> > This would be nice if you could give it a try on your victim node and share the result.
>
> Sounds that the Intel mail fitering system doesn't like the attached shell script.
> Please find it there: https://gist.github.com/ldu4/a5cc1a93f293108ea387d43d5d5e7f44
>
> Thanks,
> Laurent.
>
#### THP always
#### SPF 0
average:2628818
average:2732209
average:2728392
average:2550695
average:2689873
average:2691963
average:2627612
average:2558295
average:2707877
average:2726174
#### SPF 1
average:2426260
average:2145674
average:2117769
average:2292502
average:2350403
average:2483327
average:2467324
average:2335393
average:2437859
average:2479865
#### THP never
#### SPF 0
average:2712575
average:2711447
average:2672362
average:2701981
average:2668073
average:2579296
average:2662048
average:2637422
average:2579143
average:2608260
#### SPF 1
average:2348782
average:2203349
average:2312960
average:2402995
average:2318914
average:2543129
average:2390337
average:2490178
average:2416798
average:2424216
#### THP always
#### SPF 0
average:4370143
average:4245754
average:4678884
average:4665759
average:4665809
average:4639132
average:4210755
average:4330552
average:4290469
average:4703015
#### SPF 1
average:3810608
average:3918890
average:3758003
average:3965024
average:3578151
average:3822748
average:3687293
average:3998701
average:3915771
average:3738130
#### THP never
#### SPF 0
average:4505598
average:4672023
average:4701787
average:4355885
average:4338397
average:4446350
average:4360811
average:4653767
average:4016352
average:4312331
#### SPF 1
average:3685383
average:4029413
average:4051615
average:3747588
average:4058557
average:4042340
average:3971295
average:3752943
average:3750626
average:3777582
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