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Issue 700910 link

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Issue metadata

Status: Duplicate
Merged: issue 700364
Owner: ----
Closed: Mar 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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13.4% regression in blink_perf.canvas at 455707:455787

Project Member Reported by hjd@chromium.org, Mar 13 2017

Issue description

See the link to graphs below.
 

Comment 1 by hjd@chromium.org, Mar 13 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=700910

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgtNCcogkM


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

chromium-rel-mac11
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Mar 13 2017

Mergedinto: 700364
Status: Duplicate (was: Untriaged)

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : Michael Hablich
  Commit : 7c3936c67a6361371d9a00d83e2c03ecc603ce76
  Date   : Thu Mar 09 08:05:42 2017
  Subject: Version 5.9.34.1 (Turn on I+TF)

Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : blink_perf.canvas
  Metric       : draw-dynamic-canvas-2d-to-hw-accelerated-canvas-2d/draw-dynamic-canvas-2d-to-hw-accelerated-canvas-2d
  Change       : 17.31% | 29899.5080386 -> 24724.1003623

Revision                           Result                  N
chromium@455706                    29899.5 +- 1228.46      6      good
chromium@455717                    29483.8 +- 1776.44      6      good
chromium@455719                    29942.3 +- 1463.33      6      good
chromium@455719,v8@7c3936c67a      25122.6 +- 1007.69      6      bad       <--
chromium@455719,v8@fbffc377e3      24835.3 +- 1150.27      6      bad
chromium@455720                    24634.9 +- 1260.67      6      bad
chromium@455722                    25105.5 +- 1013.69      6      bad
chromium@455727                    24848.9 +- 719.109      6      bad
chromium@455747                    24773.3 +- 1305.86      6      bad
chromium@455787                    24724.1 +- 364.865      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests blink_perf.canvas

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8985229403861228720

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5415527125614592


| 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 Speed>Bisection.  Thank you!

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