https://bugs.freedesktop.org/show_bug.cgi?id=109171
Bug ID: 109171 Summary: AMD's GPU is Slower than Intel's Product: Mesa Version: 18.2 Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: critical Priority: medium Component: Drivers/Gallium/r600 Assignee: dri-devel@lists.freedesktop.org Reporter: ali.sherif10@yahoo.com QA Contact: dri-devel@lists.freedesktop.org
glxgears and CS: Go are much slower with AMD's GPU. Performance's much higher with Intel's.
Outputs: $ glxgears 306 frames in 5.0 seconds = 61.029 FPS 299 frames in 5.0 seconds = 59.761 FPS 299 frames in 5.0 seconds = 59.762 FPS 299 frames in 5.0 seconds = 59.762 FPS 299 frames in 5.0 seconds = 59.762 FPS
$ DRI_PRIME=1 glxgears 304 frames in 5.0 seconds = 60.666 FPS 299 frames in 5.0 seconds = 59.762 FPS 299 frames in 5.0 seconds = 59.762 FPS 299 frames in 5.0 seconds = 59.763 FPS 299 frames in 5.0 seconds = 59.760 FPS
$ vblank_mode=0 glxgears ATTENTION: default value of option vblank_mode overridden by environment. 32606 frames in 5.0 seconds = 6521.047 FPS 31516 frames in 5.0 seconds = 6302.010 FPS 32145 frames in 5.0 seconds = 6428.891 FPS 31443 frames in 5.0 seconds = 6288.595 FPS 31029 frames in 5.0 seconds = 6205.721 FPS
$ DRI_PRIME=1 vblank_mode=0 glxgears ATTENTION: default value of option vblank_mode overridden by environment. 12031 frames in 5.0 seconds = 2406.195 FPS 10110 frames in 5.0 seconds = 2021.870 FPS 10122 frames in 5.0 seconds = 2022.474 FPS 9782 frames in 5.0 seconds = 1956.206 FPS 10175 frames in 5.0 seconds = 2034.901 FPS
Laptop: HP Pavilion g6. AMD's GPU: Radeon HD 7670M. OS: 64-bit Linux (Fedora 29 KDE Spin).