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Issue metadata

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



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46.1% regression in v8.mobile_infinite_scroll_tbmv2 at 470486:470520

Project Member Reported by tdres...@chromium.org, May 18 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=724131

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgmprSvgkM


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

android-webview-nexus5X
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, May 20 2017

Mergedinto: 721238
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : yhirano
  Commit : 91088a195969f5af61f404c9f02edc622cbe373a
  Date   : Wed May 10 05:49:31 2017
  Subject: Add Field Trial Testing Configuration for MojoLoading

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : v8.mobile_infinite_scroll_tbmv2
  Metric       : v8-gc-total_avg/discourse
  Change       : 19.55% | 0.833653913424 -> 0.996598041908

Revision             Result                     N
chromium@470485      0.833654 +- 0.542804       14      good
chromium@470488      0.81416 +- 0.276426        6       good
chromium@470489      0.710393 +- 0.278739       6       good
chromium@470490      0.990673 +- 0.0912233      8       bad       <--
chromium@470494      0.97804 +- 0.0670441       9       bad
chromium@470503      0.965578 +- 0.106015       14      bad
chromium@470520      0.996598 +- 0.100194       9       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=discourse v8.mobile_infinite_scroll_tbmv2

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8979246046078253984

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5322439493419008


| 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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