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Issue metadata

Status: WontFix
Owner:
Closed: May 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 1
Type: Bug-Regression



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blink_style.polymer failure on chromium.perf at 471654 - 471708

Project Member Reported by altimin@chromium.org, May 15 2017

Issue description

Revision range first seen:  https://test-results.appspot.com/revision_range?start=471654&end=471708

Link to failing step log: https://uberchromegw.corp.google.com/i/chromium.perf/builders/Android%20Nexus5X%20WebView%20Perf%20%281%29/builds/3916/steps/blink_style.polymer

Bots failing:
Android Nexus5X WebView Perf (1)
Android Nexus6 WebView Perf (1)
Android Nexus7v2 Perf (1)

If the test is disabled, please downgrade to Pri-2.

 
Project Member

Comment 2 by 42576172...@developer.gserviceaccount.com, May 16 2017

Cc: hayato@chromium.org
Owner: hayato@chromium.org

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

Hi hayato@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


=== BISECT JOB RESULTS ===
Test failure found with culprit

Suspected Commit
  Author : hayato
  Commit : a7ab8a110bd6b5339c03a34a5a6bb9a419a49e60
  Date   : Mon May 15 06:33:13 2017
  Subject: Make /deep/ as no-op and remove ::shadow in dynamic profile

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : blink_style.polymer
  Metric       : benchmark_duration/benchmark_duration

Revision             Exit Code      N
chromium@471654      0 +- N/A       20      good
chromium@471681      0 +- N/A       20      good
chromium@471683      0 +- N/A       20      good
chromium@471684      1 +- N/A       20      bad       <--
chromium@471685      1 +- N/A       20      bad
chromium@471688      1 +- N/A       20      bad
chromium@471695      1 +- N/A       20      bad
chromium@471708      1 +- N/A       20      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 blink_style.polymer

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8979513578554434336

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5229489421811712


| 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!

Comment 3 by hayato@chromium.org, May 16 2017

Status: Assigned (was: Untriaged)
Let me work on this.
Basically, this wouldn't be a regression. I guess we have to update the benchmark so that it doesn't depend on /deep/ or ::shadow.
I'll take a look.

Comment 4 by hayato@chromium.org, May 16 2017

Status: WontFix (was: Assigned)
It looks this benchmark was already deleted: https://codereview.chromium.org/2885563002

Project Member

Comment 5 by 42576172...@developer.gserviceaccount.com, May 17 2017

 Issue 722796  has been merged into this issue.

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