Initial benchmark of Glucose/i965 with expedite

[Keith Whitwell]

José Fonseca wrote:
> On 10/19/07, Carl Worth <cworth at cworth.org> wrote:
>> On Thu, 18 Oct 2007 15:53:04 -0700, Carl Worth wrote:
>>> On Thu, 18 Oct 2007 08:10:32 +0000 (UTC), José Fonseca wrote:
>>>> I wrote some quick status info on
>>>>
>>>>   http://www.freedesktop.org/wiki/Software/Glucose
>>> Thanks for this. It's helpful for me, and likely for others as well.
>> So I got it all to compile and started running some benchmarks. I
>> tried a new benchmark this time which is the "expedite" program that
>> comes with evas.
>>
>> I've written up more details with a bar chart here:
>>
>>         http://cworth.org/glucose/i965/first_look/
>>
>> The short summary is that I'm not seeing any benefit to running
>> Glucose over XAA on my i965 machine.
>>
>> I might have botched things entirely, so I'd be glad if anyone could
>> tell me things I could do to verify that I'm actually getting expected
>> results.
>>
>> I did find that one of the tests failed due to a failed symbol in some
>> glucose module, (I don't have the details now, as I'm not near that
>> machine and expedite sadly requires user interaction to run---I'll
>> post more details when I'm back at that machine later).
>>
>> As always, any feedback is welcome,
> 
> Hi Carl. Interesting results indeed. My involvement with glucose so
> far consisted in updating and stabilizing the code, so I can't really
> comment much about performance. (I used unoptimized code with
> debugging options most of the time.)
> 
> Nevertheless, it strikes me as odd the excessive resemblance between
> Glucose and XAA timings for most tests, since they essentially use
> different code paths.
> 
> Things to check on .../var/log/Xorg.0.log are:
> 
>   AIGLX: Loaded and initialized .../lib/dri/i915_dri.so
> 
>   intel(0): Using GLUCOSE for acceleration
> 
> If either is missing then you're either using glucose with GL software
> rendering, or no glucose at all.

I'm also wondering if glucose relies on the offscreen rendering 
facilities of OpenGL like framebuffer_objects which the i965 driver 
doesn't support.

Keith