[ltp] R51 - OpenGl slow or fast depending on user

[Florian Reitmeir]

Hi,

the glxgears manual states .. that its not an benchmark. in newer
version the output is synchronized to the monitor refresh rate.. and the
monitor refresh rate is subject to power management (at least on intel
chips) so it can vary depending on input devices.

to disable the sync.. a quick search:


----------------------------------------------
`--> glxgears
Running synchronized to the vertical refresh.  The framerate should be
approximately the same as the monitor refresh rate.
300 frames in 5.0 seconds = 59.973 FPS

----------------------------------------------
`-->    vblank_mode=0 glxgears
ATTENTION: default value of option vblank_mode overridden by environment.
3767 frames in 5.0 seconds = 753.229 FPS


greetings

On 07/05/14 19:11, Florian wrote:
> Quite an old thread, but last week I reawaked my R51 with Debian 6 and
> now I receive
> 2115 frames in 5 .0 seconds = 422.588 FPS
> 2118 frames in 5.0 seconds = 423.576 FPS
> 2120 frames in 5.0 seconds = 423.633 FPS
> 2122 frames in 5.0 seconds = 424.374 FPS
> 2120 frames in 5.0 seconds = 423.632 FPS
> 1848 frames in 5.0 seconds = 369.537 FPS
> 
> Now my pretty old Thinkpad runs like a young god and Debian has promised
> security updates for two more years.
> 
> Florian
> 
> ------------------------------------------------------------------------
> From: dorpmueller@hotmail.com
> To: linux-thinkpad@linux-thinkpad.org
> Subject: RE: [ltp] OpenGl slow or fast depending on user
> Date: Thu, 20 Sep 2012 19:16:28 +0000
> 
> Nevertheless for the "fast" user with glxgears I receive:
> 304 frames in 5.0 seconds = 60.678 FPS
> 302 frames in 5.0 seconds = 60.266 FPS
> 302 frames in 5.0 seconds = 60.267 FPS
> 302 frames in 5.0 seconds = 60 .267 FPS
> 
> For the slow user it is only
> 190 frames in 5.0 seconds = 37.979 FPS
> 188 frames in 5.0 seconds = 37.580 FPS
> 193 frames in 5.1 seconds = 38.032 FPS
> 193 frames in 5.0 seconds = 38.405 FPS
> 197 frames in 5.0 seconds = 39.267 FPS
> 
> Kind of strange..
> 
> Florian
> 
> 
>> Subject: Re: [ltp] OpenGl slow or fast depending on user
>> From: alexdeucher@gmail.com
>> To: linux-thinkpad@linux-thinkpad.org
>> Date: Mon, 17 Sep 2012 12:34:41 -0400
>>
>> On Sun, Sep 16, 2012 at 4:34 PM, Florian Dorpmueller
>> <dorpmueller@hotmail .com> wrote:
>> >
>> > I adjusted all group privilleges for both users but it didn't help.
>> > Please find attached the output of "glxinfo" for both. I cannot find any
>> > difference but I am not a specialist in this case.
>>
>> Looks fine. It could be a matter of resources (not enough vram, etc.
>> to go around). The r1xx hw is pretty old and didn't have much vram.
>>
>> Alex
>>
>> >
>> > Florian
>> >
>> > ----------------------------------------
>> >> Subject: Re: [ltp] OpenGl slow or fast depending on user
>> >> From: alexdeucher@gmail.com
>> >> To: linux-thinkpad@linux-thinkpad.org
>> >> Date: Sat, 15 Sep 2012 09:49:13 -0400
>> >>
>> >> On Sat, Sep 15, 2012 at 8:38 AM, Florian Dorpmueller
>> >> <dorpmueller@hotmail.com> wrote:
>> >> >
>> >> > Hi,
>> >> >
>> >> > with my Thinkpad R51 (Radeon 7500) and Xubuntu 12.04 I have the
> problem, that the video performance is depending on the current user.
>> >> >
>> >> > I am using mplayer2 and smplayer2. The video adapter is "gl". In
> the system properties for CompizConfig for both users OpenGl is
> activated. But when one user plays a video it jerks where for the other
> no jerking is to be seen .
>> >> >
>> >> > Since I have no idea about the reason I would appreciate any hint
> for this matter.
>> >>
>> >> Make sure both users are in the "video" group or whatever group your
>> >> distro uses for 3D. run glxinfo as each user and check the renderer
>> >> string make sure both are using 3D acceleration.
>> >>
>> >> Alex
>> >>
>> >> >
>> >> > Cheers,
>> >> > Florian --
>> >> > The linux-thinkpad mailing list home page is at:
>> >> > http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
>> >> --
>> >> The linux-thinkpad mailing list home page is at:
>> >> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
>> >
>> --
>> The linux-thinkpad mailing list home page is at:
>> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad


-- 
Florian Reitmeir
E-Mail: florian@reitmeir.org
Tel: +43 650 2661660