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Issue metadata

Status: Duplicate
Merged: issue 609940
Owner:
Last visit > 30 days ago
Closed: May 2016
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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36.3%-83.1% regression in blink_perf.layout at 391973:392028

Project Member Reported by alexclarke@chromium.org, May 9 2016

Issue description

See the link to graphs below.
 
Mergedinto: 609940
Status: Duplicate (was: Assigned)

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


===== SUSPECTED CL(s) =====
Subject : Re-enable complex text path on android
Author  : eae
Commit description:
  
Trying to re-enable the complex text path on Android now that hb_font_t
is cached with the user data container instead of the hb_face_t object.

This should result in lower memory usage for the complex text code path,
we'll watch the memory bots though and revert as needed if it regresses.

BUG=577306
R=drott@chromium.org

Review-Url: https://codereview.chromium.org/1949053002
Cr-Commit-Position: refs/heads/master@{#392010}
Commit  : 9af72a88ea5b39c2c36c99f8b091c5feae82ef7d
Date    : Fri May 06 05:51:07 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev   N  Good?
chromium@392002  9.7366   0.140172  5  good
chromium@392008  9.92969  0.241817  5  good
chromium@392009  9.68584  0.16706   5  good
chromium@392010  6.15853  0.277337  5  bad    <--
chromium@392011  6.25643  0.196452  5  bad
chromium@392014  6.36767  0.185785  5  bad

Bisect job ran on: android_nexus9_perf_bisect
Bug ID: 610246

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests blink_perf.layout
Test Metric: flexbox-lots-of-data/flexbox-lots-of-data
Relative Change: 34.60%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus9_perf_bisect/builds/1781
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9013151350662960400


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5797833102327808

| 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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