Bug: wayland performance halfed when running es2gears_wayland at fedora17
zhiwen.wu at linux.intel.com
Mon Aug 20 22:12:00 PDT 2012
We are doing some performance profiling on wayland using es2gears and
found a issue that mesa-deoms/src/egl/opengles2/es2gears_wayland
(running drm backend) on platform-a (sandybridge, fedora 17 with kernel
version 3.5) has 30fps but es2gears_x11 60fps, but on platform-b
(sandybridge, Ubuntu 12.04 with kernel version 3.2) the fps is 60fps
both for es2gears_wayland and es2gears_x11.
Two platform has the same version status:
I debugged on platform-a and found that drmModePageFlip in
weston/src/compositor-drm.c has calling rate of 30/s. If not set the
EGL_DEPTH_SIZE attribute on EGLContext in
mesa-deoms/src/egl/eglut/eglut.c, the fps of es2gears_wayland gets 60 fps.
we also installed ubuntu 12.04(with 3.2 kernel) on platform-a, and build
all the packages needed, the es2gears_wayland got 60fps.
So, my question is why wayland performance halfed when running
es2gears_wayland at fedora17 (kernel 3.5)?
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