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  • cairo
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  • #117

Closed
Open
Created Dec 18, 2014 by Bugzilla Migration User@bugzilla-migration

[IVB/BDW Bisected] Firefox-fishbowl.trace and Firefox-fishtank.trace performance reduced ~96%

Submitted by wen..@..el.com

Assigned to Chris Wilson @ickle

Link to original bug (#87438)

Description

Created attachment 110981 dmesg file

Environment:

Test Platform:IVB/BDW

GFX SW Stack Libdrm: (master)libdrm-2.4.58-19-gf99522e678dbbaffeca9462a8edcbe900574dc12 Mesa: (master)83e8bb5b1a50c0105b642d559999f07fa64a982f Xserver: (master)xorg-server-1.16.99.901-98-g0f5fdaf600bfeada966aea942cb3e347d4efee30 Xf86_video_intel: (master)2.99.916-177-g99537089346ed7a1bc6b02349fad93845e865bb9 Cairo: (master)4a225fca Libva: (master)8986ec692b19d8dd6bd2aa118b5dffbd05a8f909 Libva_intel_driver: (master)b5d6d9d425a6d539b27d22992bda05f79d1a0622 Kernel: (drm-intel-nightly)8b7ac3dc495c2d02322bc751322331d2691089e5

Regression:

YES

Bug detailed description:

Firefox-fishbowl.trace and Firefox-fishtank.trace performance reduced ~96%. It's Cairo regression, from bisect result, first bad commit is:

58728da6

Author: Bill Spitzak spitzak@gmail.com Date: Thu Oct 9 19:46:13 2014 -0700

xlib: Use image fallback for GOOD/BEST filters

Fallback is not used if the symbols defined in the previous patch to
indicate if XRender does GOOD/BEST are true.

This patch also includes some changes to take advantage of the fact that
if there is an integer translation analyze_filter will already have set
the filter to NEAREST.

Reviewed-by: Bryce Harrington <b.harrington@samsung.com

Reproduce steps:

1, xinit
2, vblank_mode=0 CAIRO_TEST_TARGET=xlib ./cairo-perf-trace -i 12 /home/cairo-traces/benchmark/firefox-fishbowl.trace

dmesg and xorg.log files have been uploaded.

Attachment 110981, "dmesg file":
dmesg.log

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