On Wed, 2003-11-26 at 00:51, Alan Cox wrote: > On Maw, 2003-11-25 at 20:26, Michel DÃnzer wrote: > > * Our drivers do something which makes newer chips perform very > > poorly with PCI GART, be they AGP or PCI > > > > The former wouldn't necessarily say anything about PCI cards, but I'm > > not sure how to determine which it is (and what exactly the actual cause > > is). > > Is there code reading from PCI space as it builds stuff or uploads > textures. Anything that ends up doing > > > *pciaddr=foo > [blah] > if(x) > *pciaddr|=FOOFLAG; > > kills your performance on PCI bus.
Thanks for the idea. I can't think of any code like this offhand. Not that this means a lot :), but it wouldn't explain the performance gap between newer and older chips, would it? -- Earthling Michel DÃnzer | Debian (powerpc), X and DRI developer Software libre enthusiast | http://svcs.affero.net/rm.php?r=daenzer ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
