Keith Whitwell wrote:
> Felix K�hling wrote:
>
>> On 03 Oct 2002 11:01:57 +0200
>> Michel D�nzer <[EMAIL PROTECTED]> wrote:
>>
>>
>>> On Don, 2002-10-03 at 01:52, thork wrote:
>>>
>>>> about the aperture thing, he told me those 8Mb where from system memory
>>>> not from the video card memory, I found this thing in the log:
>>>> (--) RADEON(0): VideoRAM: 65536 kByte (64-bit DDR SDRAM)
>>>> and ofcourse the other lines next:
>>>> (II) RADEON(0): Using 8 MB AGP aperture
>>>> but when I load the agpgart modules it says:
>>>> Sep 30 14:18:32 thork kernel: agpgart: AGP aperture is 64M @ 0xf8000000
>>>>
>>> This is the upper limit for the AGP aperture size the DRI can use.
>>>
>>>
>>>> the 480FPS on glxgear where using 24bits of color, now the CVS thing is
>>>> giving me 500FPS ... but come on! ITS A RADEON 7000!
>>>>
>>> Yes, exactly. ;) No hardware TCL (well, actually some VEs do seem to
>>> have that, you can try the RADEON_TCL_FORCE_ENABLE environment variable
>>> if you're desperate for more fps, but be warned that it will lock up if
>>> it doesn't work with your chip). Also, try to enable page flipping if
>>> you haven't already.
>>>
>>
>> That's funny: without TCL glxgears is slightly faster on my Radeon 7500!
>> Just the CPU usage is higher. With TCL I get 864 FPS (about 14% CPU
>> usage), without TCL it's 872 FPS (about 22% CPU).
>
>
> That should make some sense if you think about it. Because you aren't
> using 100% cpu, you know that in some way the card is the limiting
> factor. By turning off tcl you are unloading work from the card, thus
> perhaps making its life easier & allowing it go faster...
>
> But really, the difference is so small that it probably doesn't mean
> anything at all.
Could it be that the AGP bus is the limiting factor and pushing TCL
vertices requires more bandwidth than just pushing rasterization info?
Sorry, I know we shouldn't even get into it regarding gears...it's not a
benchmark.
Okay, everyone go back to their corners and repeat:
"Gears is not a benchmark"
"Gears is not a benchmark"
"Gears is not a benchmark"
:-)
--
/\
Jens Owen / \/\ _
[EMAIL PROTECTED] / \ \ \ Steamboat Springs, Colorado
-------------------------------------------------------
This sf.net email is sponsored by:ThinkGeek
Welcome to geek heaven.
http://thinkgeek.com/sf
_______________________________________________
Dri-devel mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/dri-devel
