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Date:   Thu, 20 Jun 2019 16:19:45 +0800
From:   Haiyan Song <haiyanx.song@intel.com>
To:     Laurent Dufour <ldufour@linux.ibm.com>
Cc:     akpm@linux-foundation.org, mhocko@kernel.org, peterz@infradead.org,
        kirill@shutemov.name, ak@linux.intel.com, dave@stgolabs.net,
        jack@suse.cz, Matthew Wilcox <willy@infradead.org>,
        aneesh.kumar@linux.ibm.com, benh@kernel.crashing.org,
        mpe@ellerman.id.au, paulus@samba.org,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, hpa@zytor.com,
        Will Deacon <will.deacon@arm.com>,
        Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
        sergey.senozhatsky.work@gmail.com,
        Andrea Arcangeli <aarcange@redhat.com>,
        Alexei Starovoitov <alexei.starovoitov@gmail.com>,
        kemi.wang@intel.com, Daniel Jordan <daniel.m.jordan@oracle.com>,
        David Rientjes <rientjes@google.com>,
        Jerome Glisse <jglisse@redhat.com>,
        Ganesh Mahendran <opensource.ganesh@gmail.com>,
        Minchan Kim <minchan@kernel.org>,
        Punit Agrawal <punitagrawal@gmail.com>,
        vinayak menon <vinayakm.list@gmail.com>,
        Yang Shi <yang.shi@linux.alibaba.com>,
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        paulmck@linux.vnet.ibm.com, Tim Chen <tim.c.chen@linux.intel.com>,
        linuxppc-dev@lists.ozlabs.org, x86@kernel.org
Subject: Re: [PATCH v12 00/31] Speculative page faults
Message-ID: <20190620081945.hwj6ruqddefnxg6z@haiyan.sh.intel.com>
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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 ? 10:37, Laurent Dufour a ?crit?:
> > 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.
> 

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#### 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

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#### 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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