https://bugs.freedesktop.org/show_bug.cgi?id=34156
Summary: r600g performance regression between 780c183b and 862ebb41 Product: Mesa Version: git Platform: x86-64 (AMD64) OS/Version: Linux (All) Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/r600 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: dawitbro@sbcglobal.net
Performance suddenly improved by 50-150% across the board in late January, so I've been very happy with Mesa r600g lately! I've been trying to do quick builds for testing every couple of days when I get home from work, watching out for any changes in performance.
My last build was at commit 780c183b (Feb. 6), and that was working great.
Tonight's build was at commit 862ebb41, and performance was degraded severely. For example, the previous build allowed torcs to hit fps in mid 30's, occasionally hitting up to 60 fps; tonight I'm getting mid 20's, occasionally hitting 30 fps. Other apps, and even the desktop, are noticeably more sluggish. (Reinstalling the previous packages restores excellent performance!)
I will try to bisect this, but some home improvement projects will prevent me from attempting it until tomorrow night at the soonest, and more likely Saturday morning. Sorry for the delay.
Hardware: Radeon HD 5750 (Evergreen JUNIPER)
Software: kernel 2.6.37 (+ radeon cherry-picks from drm-fixes) libdrm 2.4.23 xorg-server 1.9.4 xf86-video-ati 6.14.0