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Issue metadata

Status: Duplicate
Merged: issue 609517
Owner:
Closed: May 2016
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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21.5% regression in blink_perf.canvas at 391636:391659

Project Member Reported by mustaq@chromium.org, May 5 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=609584

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgtKyAqAoM


Bot(s) for this bug's original alert(s):

chromium-rel-mac11
Mergedinto: 609517
Status: Duplicate (was: Assigned)

===== BISECT JOB RESULTS =====
Status: completed


===== SUSPECTED CL(s) =====
Subject : This change enables GPU Raster on OSX.
Author  : ericrk
Commit description:
  
I've compiled a bit of benchmark data to support turning this on -
https://docs.google.com/a/google.com/document/d/1RPEnillJOaOKW47t9DYuttQkvWDo7ilx9KDB_nJnwpc/edit?usp=sharing
Still filling in more data, but I'm pretty happy with the results so far. In
a number of cases we have a performance win, and in most cases we have a power win.

Checking this in now will give us a long canary period before the next branch
point to catch any issues.

BUG= 542959 
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel;tryserver.chromium.win:win_optional_gpu_tests_rel;tryserver.blink:mac_blink_rel

Review-Url: https://codereview.chromium.org/1881053003
Cr-Commit-Position: refs/heads/master@{#391655}
Commit  : 8325892c2efdef8cff86ba16e7569f8b424daeda
Date    : Wed May 04 22:14:40 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N  Good?
chromium@391635  10228.8  31.7646  5  good
chromium@391647  10297.3  13.8036  5  good
chromium@391653  10204.6  18.8521  5  good
chromium@391654  10200.8  41.6786  5  good
chromium@391655  7935.5   38.6652  5  bad    <--
chromium@391656  7991.74  51.8131  5  bad
chromium@391659  8010.61  46.0251  5  bad

Bisect job ran on: mac_10_11_perf_bisect
Bug ID: 609584

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests blink_perf.canvas
Test Metric: drawimage-not-pixelaligned/drawimage-not-pixelaligned
Relative Change: 21.69%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_10_11_perf_bisect/builds/620
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9013469063345607712


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5903529294692352

| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
|  X  | for more information addressing perf regression bugs. For feedback,
| / \ | file a bug with component Tests>AutoBisect.  Thank you!

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