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Issue metadata

Status: Duplicate
Merged: issue 681541
Owner:
Closed: Jan 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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18.6% regression in v8.browsing_desktop_ignition at 443294:443455

Project Member Reported by leszeks@chromium.org, Jan 17 2017

Issue description

Bisecting
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=681870

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg4ObapQoM


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

chromium-rel-mac11
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Jan 17 2017

Mergedinto: 681541
Status: Duplicate (was: Assigned)

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

Suspected Commit
  Author : mvstanton
  Commit : b8294aaa978e972978b8d82cedf63befad5d7af1
  Date   : Thu Jan 12 11:29:09 2017
  Subject: [TypeFeedbackVector] Root literal arrays in function literals slots

Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : v8.browsing_desktop_ignition
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:effective_size_max/browse_search/browse_search_google_india
  Change       : 15.10% | 16970314.6667 -> 19533080.0

Revision                           Result                   N
chromium@443293                    16970315 +- 1355194      6      good
chromium@443374                    16756840 +- 325024       6      good
chromium@443395                    16941616 +- 1297463      9      good
chromium@443400                    17138074 +- 2812253      9      good
chromium@443400,v8@2bca05685f      16733316 +- 1172452      9      good
chromium@443400,v8@b8294aaa97      19355487 +- 2336960      6      bad       <--
chromium@443400,v8@81c62e070b      18918407 +- 3791142      9      bad
chromium@443400,v8@9884fb91e1      19391752 +- 1905972      6      bad
chromium@443400,v8@aa75904e3c      19719884 +- 209699       6      bad
chromium@443401                    20010380 +- 17411.1      6      bad
chromium@443402                    19637492 +- 3152428      9      bad
chromium@443404                    19543944 +- 2564850      6      bad
chromium@443415                    19537884 +- 2587476      6      bad
chromium@443455                    19533080 +- 2604861      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse.search.google.india v8.browsing_desktop_ignition

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8990201290485836368

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5318135009247232


| 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!

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