From: poma <pomidorabelisima-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Karol Herbst <karol-lIBOoy2+GI7scQ4cX5LuPg@public.gmane.org>,
nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: Re: glmark2: high CPU usage - DRI3 & modeset
Date: Thu, 7 Apr 2016 22:04:25 +0200 [thread overview]
Message-ID: <5706BD49.7090308@gmail.com> (raw)
In-Reply-To: <2037513278.20001.1460033460821.JavaMail.open-xchange-KNm3LHm9FEhKTQ5g00o1eQ@public.gmane.org>
On 07.04.2016 14:51, Karol Herbst wrote:
> did the test result changed in any way? Maybe the DRI2 run was vsynced and the
> DRI3 not?
> Nouveau has a pretty high cpu usage in general, because it usually busy waits on
> fences (I think? not sure where it was exactly that nouveau is busy waiting)
>
>> poma <pomidorabelisima@gmail.com> hat am 7. April 2016 um 13:56 geschrieben:
>>
>>
>>
>> $ glmark2
>> =======================================================
>> glmark2 2014.03
>> =======================================================
>> OpenGL Information
>> GL_VENDOR: nouveau
>> GL_RENDERER: Gallium 0.4 on NV98
>> GL_VERSION: 3.0 Mesa 11.2.0
>> =======================================================
>>
>>
>> /etc/X11/xorg.conf.d/nouveau.conf
>> Section "Device"
>> Identifier "gpu0"
>> Driver "nouveau"
>> EndSection
>>
>> $ ps -C glmark2 -o cmd,pcpu
>> CMD %CPU
>> glmark2 16.2
>>
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>> /etc/X11/xorg.conf.d/nouveau.conf
>> Section "Device"
>> Identifier "gpu0"
>> Driver "nouveau"
>> Option "DRI" "3"
>> EndSection
>>
>> $ ps -C glmark2 -o cmd,pcpu
>> CMD %CPU
>> glmark2 86.4
>>
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>> /etc/X11/xorg.conf.d/modeset.conf
>> Section "Device"
>> Identifier "gpu0"
>> Driver "modesetting"
>> EndSection
>>
>> $ ps -C glmark2 -o cmd,pcpu
>> CMD %CPU
>> glmark2 94.5
>>
'vblank_mode=0 glmark2' makes no difference.
A -fence- as a sync object?
https://www.opengl.org/wiki/Sync_Object#Fence
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prev parent reply other threads:[~2016-04-07 20:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-07 11:56 glmark2: high CPU usage - DRI3 & modeset poma
[not found] ` <57064ADC.6070703-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-04-07 12:51 ` Karol Herbst
[not found] ` <2037513278.20001.1460033460821.JavaMail.open-xchange-KNm3LHm9FEhKTQ5g00o1eQ@public.gmane.org>
2016-04-07 20:04 ` poma [this message]
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