linux-kernel - Re: [PATCHv2 0/7] sched/fair: Migrate 'misfit' tasks on asymmetric capacity systems

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Date:   Tue, 20 Mar 2018 09:17:35 +0000
From:   Morten Rasmussen <morten.rasmussen@....com>
To:     Gaku Inami <gaku.inami.xh@...esas.com>
Cc:     "peterz@...radead.org" <peterz@...radead.org>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "valentin.schneider@....com" <valentin.schneider@....com>,
        "dietmar.eggemann@....com" <dietmar.eggemann@....com>,
        "vincent.guittot@...aro.org" <vincent.guittot@...aro.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCHv2 0/7] sched/fair: Migrate 'misfit' tasks on asymmetric
 capacity systems

Hi,

On Tue, Mar 20, 2018 at 05:30:00AM +0000, Gaku Inami wrote:
> Hi
> 
> > -----Original Message-----
> > From: Morten Rasmussen [mailto:morten.rasmussen@....com]
> > Sent: Thursday, March 15, 2018 11:47 PM
> > To: peterz@...radead.org; mingo@...hat.com
> > Cc: valentin.schneider@....com; dietmar.eggemann@....com; vincent.guittot@...aro.org; Gaku Inami
> > <gaku.inami.xh@...esas.com>; linux-kernel@...r.kernel.org; Morten Rasmussen <morten.rasmussen@....com>
> > Subject: [PATCHv2 0/7] sched/fair: Migrate 'misfit' tasks on asymmetric capacity systems
> [snip]
> > 
> > The patches have been tested on:
> >    1. Arm Juno (r0): 2+4 Cortex A57/A53
> >    2. Hikey960: 4+4 Cortex A73/A53
> > 
> 
> I have tested this on our R-Car again and it works well. In addition,
> I confirmed that this patch-set also brings performance improvement to
> other benchmarks(e.g. memory load latency in LMbench). You can add:
> 
> Tested-by: Gaku Inami <gaku.inami.xh@...esas.com>
> 
> The patches have been tested on:
>    3. Renesas R-Car H3 : 4+4 Cortex A57/A53
> 
> Results:
> Single runs with completion time of each task
> R-Car H3 (tip)
>     total time:                          0.9435s
>     total time:                          0.9952s
>     total time:                          1.3511s
>     total time:                          1.6747s
> 
> R-Car H3 (misfit)
>     total time:                          0.9387s
>     total time:                          0.9280s
>     total time:                          0.9616s
>     total time:                          0.9934s
> 
> 10 run summary (tracking longest running task for each run)
> 	R-Car H3
> 	avg	max
> tip     1.6737  1.6758
> misfit  0.9980  1.0409

Thanks a lot for testing again.

Morten