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Issue 727355 link

Starred by 2 users

Issue metadata

Status: Duplicate
Merged: issue 727727
Owner: ----
Closed: May 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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38.6% improvement in system_health.common_mobile at 473208:475195

Project Member Reported by samans@chromium.org, May 29 2017

Issue description

See the link to graphs below.
 

Comment 1 by samans@chromium.org, May 29 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=727355

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDghsSIogoM


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

android-webview-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, May 30 2017

Mergedinto: 726916
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : drott
  Commit : ba0e6cd12bf6f5e864e1f60993ceafef3f4a7cae
  Date   : Wed May 24 09:08:34 2017
  Subject: Do not build FreeType with HarfBuzz support on Android

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : system_health.common_mobile
  Metric       : timeToFirstContentfulPaint_avg/load_search/load_search_baidu
  Change       : 39.06% | 571.643666667 -> 348.3875

Revision             Result                  N
chromium@473207      571.644 +- 111.149      6      good
chromium@474201      542.435 +- 46.4254      6      good
chromium@474217      545.077 +- 41.9221      6      good
chromium@474219      552.608 +- 35.0432      6      good
chromium@474220      540.969 +- 43.3858      6      good
chromium@474221      358.391 +- 175.207      6      bad       <--
chromium@474225      329.553 +- 31.2972      6      bad
chromium@474233      325.76 +- 21.129        6      bad
chromium@474264      326.861 +- 19.4108      6      bad
chromium@474326      345.429 +- 48.3611      6      bad
chromium@474450      330.691 +- 27.3428      6      bad
chromium@474698      335.801 +- 42.0073      6      bad
chromium@475195      348.387 +- 50.8263      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=load.search.baidu system_health.common_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978240528401749744

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5790652224241664


| 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!
Mergedinto: -726916 727727

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