New issue
Advanced search Search tips

Issue 608962 link

Starred by 0 users

Issue metadata

Status: WontFix
Owner:
Closed: May 2016
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



Sign in to add a comment

2.1%-3.3% regression in page_cycler.basic_oopif at 391201:391226

Project Member Reported by lanwei@google.com, May 4 2016

Issue description

See the link to graphs below.
 
Cc: e...@chromium.org
Owner: e...@chromium.org

=== Auto-CCing suspected CL author eae@chromium.org ===

Hi eae@chromium.org, the bisect results pointed to your CL below as possibly
causing a regression. Please have a look at this info and see whether
your CL be related.


===== 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-ot-font
is used for glyph lookups and the separate glyph cache has been removed.

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/1942223002
Cr-Commit-Position: refs/heads/master@{#391215}
Commit  : 7e9bf5e20a53b0934944d5d40456ec7e7ea0815b
Date    : Tue May 03 13:16:54 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N  Good?
chromium@391213  2769.38  6.83812  5  good
chromium@391214  2760.27  22.4272  5  good
chromium@391215  2862.32  13.8379  5  bad    <--
chromium@391217  2854.96  19.0249  5  bad

Bisect job ran on: android_nexus5X_perf_bisect
Bug ID: 608962

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests page_cycler.typical_25
Test Metric: cold_times/page_load_time
Relative Change: 3.09%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5X_perf_bisect/builds/133
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9013639517646588016


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5271883688181760

| 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!

Comment 3 by e...@chromium.org, May 4 2016

Cc: drott@chromium.org
Already reverted.
Status: WontFix (was: Assigned)
The regressions have recovered.

Sign in to add a comment