linux-kernel - Re: [drm/i915/gt] 98479ada42: phoronix-test-suite.supertuxkart.1024x768.Windowed.Basic.1.OldMine.frames_per

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Message-ID: <160162820546.4780.2561710802505007406@build.alporthouse.com>
Date:   Fri, 02 Oct 2020 09:43:25 +0100
From:   Chris Wilson <chris@...is-wilson.co.uk>
To:     kernel test robot <rong.a.chen@...el.com>
Cc:     Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Andi Shyti <andi.shyti@...el.com>,
        Lyude Paul <lyude@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
        lkp@...el.com, ying.huang@...el.com, feng.tang@...el.com,
        zhengjun.xing@...el.com, guobing.chen@...el.com,
        ming.a.chen@...el.com, frank.du@...el.com, Shuhua.Fan@...el.com,
        wangyang.guo@...el.com, Wenhuan.Huang@...el.com,
        jessica.ji@...el.com, shan.kang@...el.com, guangli.li@...el.com,
        tiejun.li@...el.com, yu.ma@...el.com, dapeng1.mi@...el.com,
        jiebin.sun@...el.com, gengxin.xie@...el.com, fan.zhao@...el.com
Subject: Re: [drm/i915/gt] 98479ada42: phoronix-test-suite.supertuxkart.1024x768.Windowed.Basic.1.OldMine.frames_per_second -36.0% regression

Quoting kernel test robot (2020-10-02 09:27:40)
> Greeting,
> 
> FYI, we noticed a -36.0% regression of phoronix-test-suite.supertuxkart.1024x768.Windowed.Basic.1.OldMine.frames_per_second due to commit:

Where's the power consumption graph? You have a benchmark that although
is running faster than the display is failing to keep the GPU busy. That
alone says there is a latency issue along the GL paths. Is papering over
an issue in command submission worth the power cost?
-Chris