reassign 583653 linux-2.6 2.6.32-13 kthxbye On Sam, 2010-05-29 at 17:33 +0200, Sylvain Beucler wrote: > On Sat, May 29, 2010 at 04:21:46PM +0200, Michel Dänzer wrote: > > On Sam, 2010-05-29 at 15:02 +0200, Sylvain Beucler wrote: > > > On Sat, May 29, 2010 at 01:05:36PM +0200, Michel Dänzer wrote: > > > > On Sam, 2010-05-29 at 10:21 +0200, Sylvain Beucler wrote: > > > > > > > > > > The attached simple test runs at 17FPS in KMS mode on my computer, > > > > > against 300FPS in non-KMS mode. > > > > > > > > Forgot to mention: sysprof or oprofile profiles of slow and fast runs > > > > might be interesting, at least if the CPU is pegged during the runs. > > > > > > Here are 2 sysprof runs: > > > - UMS / fast: > > > - kernel 11.25% > > > - X 77.20% > > > - KMS / slow: > > > - kernel 90.28% > > > - X 5.79% > > > > Unfortunately, there's no information about where in the kernel the > > cycles are burnt. This information should be available with sysprof > > 1.1.x and a kernel with the performance counter/event framework. > > Quite a nice tool: > > __libc_start_main 0,00% 93,67% > _start 0,02% 87,66% > In file /usr/bin/Xorg 0,13% 87,64% > In file /usr/lib/xorg/modules/libexa.so 0,04% 86,60% > In file /usr/lib/xorg/modules/drivers/radeon_drv.so 0,08% 86,48% > radeon_bo_open 0,00% 79,87% > In file /usr/lib/libdrm_radeon.so.1.0.0 0,00% 79,87% > drmCommandWriteRead 0,00% 79,86% > __kernel_vsyscall 0,00% 79,86% > - - kernel - - 0,00% 79,86% > on_each_cpu 36,81% 36,81% > __purge_vmap_area_lazy 20,31% 20,31% > flush_all_zero_pkmaps 7,84% 7,84% > vm_unmap_aliases 1,65% 1,65% > > What do you think that means?
I think it could confirm my suspicion below, reassigning to the kernel. Would be great if you could try if it's better with a 2.6.33 or 2.6.34 kernel. > > Anyway, this probably means it's an issue in the kernel, not the X > > driver. May be solved already in newer kernels, there have been some AGP > > performance improvements which I'm not sure have made it into Debian's > > 2.6.32 DRM backport. > -- Earthling Michel Dänzer | http://www.vmware.com Libre software enthusiast | Debian, X and DRI developer _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
