https://bugs.freedesktop.org/show_bug.cgi?id=42117
Bug #: 42117 Summary: r200 driver performance, ums, all mesa versions from 7.6 Classification: Unclassified Product: Mesa Version: unspecified Platform: x86 (IA32) OS/Version: Linux (All) Status: NEW Severity: major Priority: medium Component: Drivers/DRI/r200 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: majkell10@interia.pl
With disabled ModeSetting, performance in some 3d applications drop almost to zero.
glxgears runs flawlessly, few maps in openarena is unplayable, extremetuxracer is unplayable.
oprofile with tuxracer: CPU: Athlon, speed 1399.45 MHz (estimated) Counted CPU_CLK_UNHALTED events (Cycles outside of halt state) with a unit mask of 0x00 (No unit mask) count 100000 samples % symbol name 146220 16.6991 sample_lambda_2d 123695 14.1267 fetch_texel_2d_f_argb8888 102183 11.6699 sample_linear_2d 86150 9.8388 linear_texel_locations.clone.23 79573 9.0877 interpolate_texcoords 69939 7.9874 _swrast_fog_rgba_span 55210 6.3053 _swrast_texture_span 54151 6.1843 _swrast_compute_lambda 50989 5.8232 radeonReadDepthSpan_z24_s8 21567 2.4631 radeonReadRGBASpan_ARGB8888 11802 1.3479 radeonWriteRGBASpan_ARGB8888
I've tested almost all mesa versions from 7.6 to 7.11, unsuccessfully. With mesa 7.5 all works great. Mesa 7.6.1 compiled with folders radeon and r200 copied from 7.5.2, also works great.