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Issue 717018 link

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Issue metadata

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



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30.5% regression in angle_perftests at 405136:405206

Project Member Reported by geoffl...@chromium.org, May 1 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=717018

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg8o2jqQsM


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

chromium-rel-win7-gpu-nvidia
Cc: sebmarchand@chromium.org
Owner: sebmarchand@chromium.org

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

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


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

Suspected Commit
  Author : sebmarchand
  Commit : 0d74d7f71c93bfc3b32653de7958ff84d173937d
  Date   : Wed Jul 13 15:42:28 2016
  Subject: Disable Full-WPO for the x64 official build (non-PGO).

Bisect Details
  Configuration: winx64nvidia_perf_bisect
  Benchmark    : angle_perftests
  Metric       : DrawCallPerf_gl_render_to_texture_null/score
  Change       : 30.13% | 258216.666667 -> 180410.833333

Revision             Result                 N
chromium@405135      258217 +- 3547.65      6      good
chromium@405151      258916 +- 686.433      6      good
chromium@405161      258404 +- 876.436      6      good
chromium@405163      258160 +- 2694.21      6      good
chromium@405164      180572 +- 2761.94      6      bad       <--
chromium@405166      180145 +- 3610.15      6      bad
chromium@405171      181103 +- 1973.49      6      bad
chromium@405206      180411 +- 6025.05      6      bad

To Run This Test
  .\src\out\Release_x64\angle_perftests.exe --test-launcher-print-test-stdio=always --test-launcher-jobs=1

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8980789288809213264

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5800513964081152


| 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!
Status: WontFix (was: Assigned)
Don't worry about this one, Seb.  I wanted to see why this one-off perf test regressed.

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