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SubjectRe: [PATCH v12 00/31] Speculative page faults
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Le 06/07/2020 à 11:25, Chinwen Chang a écrit :
> On Thu, 2019-06-20 at 16:19 +0800, Haiyan Song wrote:
>> 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.
>>>
>
> Hi Laurent,
>
> We merged SPF v11 and some patches from v12 into our platforms. After
> several experiments, we observed SPF has obvious improvements on the
> launch time of applications, especially for those high-TLP ones,
>
> # launch time of applications(s):
>
> package version w/ SPF w/o SPF improve(%)
> ------------------------------------------------------------------
> Baidu maps 10.13.3 0.887 0.98 9.49
> Taobao 8.4.0.35 1.227 1.293 5.10
> Meituan 9.12.401 1.107 1.543 28.26
> WeChat 7.0.3 2.353 2.68 12.20
> Honor of Kings 1.43.1.6 6.63 6.713 1.24

That's great news, thanks for reporting this!

>
> By the way, we have verified our platforms with those patches and
> achieved the goal of mass production.

Another good news!
For my information, what is your targeted hardware?

Cheers,
Laurent.

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