On Fri, 15 Aug 2003 21:25:55 +0200 Moritz Muehlenhoff <[EMAIL PROTECTED]> wrote:
> Ian Romanick wrote: > > >I'm using a Radeon 7500 (RV200 QW) on an Athlon XP1700+, > > >but glxgears does only reach about 370-440 fps, which is > > >(AFAIR on IRC) way below the expected performance for that > > >machine. I tested both 4.3.0 (Debian pre1v1) and latest > > >binary DRI on top, but it didn't change much. > > >I tested both the DRM from 2.6.0-test3 and the DRM that is > > >shipped with 4.3.0 on top of 2.4.21-bk30. > > >glxgears tells me that direct rendering is enabled and indeed > > >the performance drops severely if I use it without DRM (down > > >to 60 fps). I tried to disable/enable all possible combinations > > >of driver tweaks (like RADEON_NO_IRQS etc.), but that didn't > > >help. You can find my X.log, my Xfree-config, glxinfo output > > >and lspci -vvv at http://www.tzi.de/~jmm/radeon-7500-dri-slowness.tar.gz > > > > The only thing that looks at all odd in any of that is: > > > > (WW) System lacks support for changing MTRRs. > > > > Does your kernel have MTRR support? If not, try rebuilding with that > > enabled. That should give you a healthy speed boost. > > This was left over from when I was testing the performance w/o MTRRs, > sorry for the confusion. With MTRRs enables I get the average 350-440 fps. > > gandalf:/home/jmm# cat /proc/mtrr > reg00: base=0x00000000 ( 0MB), size= 512MB: write-back, count=1 > reg01: base=0xc0000000 (3072MB), size= 64MB: write-combining, count=1 > reg07: base=0xd0000000 (3328MB), size= 64MB: write-combining, count=2 > > Is my RV200 QW a regular Radeon 7500 or some lame el cheapo model? > What's the expected glxgears rate for my kind of setup? I don't think this is a matter of the chip revision but rather what the card manufacturer puts around the chip, like DDR vs. SDR RAM and 64-bit vs. 128-bit memory interface and at which frequencies the chip and memory are clocked. For comparison, I have a cheap clone radeon card also with RV200 QW chip, 64MB SDR Ram and passive cooling (as an indication for the unknown clock frequency). With 24-bit color depth, agp 4x and page flipping I get glxgears frame rates around 750 fps. One more thing that may influence the performance is your screen resolution and refresh rate as the refresh consumes memory bandwidth. > > Cheers, > Moritz > Regards, Felix ------------ __\|/__ ___ ___ ------------------------- Felix ___\_e -_/___/ __\___/ __\_____ You can do anything, Kühling (_____\Ä/____/ /_____/ /________) just not everything [EMAIL PROTECTED] \___/ \___/ U at the same time. ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
