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Issue 684487 link

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Issue metadata

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



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3.3% regression in v8.infinite_scroll-ignition_tbmv2 at 445284:445287

Project Member Reported by toyoshim@chromium.org, Jan 24 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=684487

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgkI2ytwkM


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

android-nexus5X
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Jan 25 2017

Mergedinto: 683857
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : mvstanton
  Commit : 55feaaea4c83bf72a409bb1ebde5b86c979d4d1c
  Date   : Thu Jan 19 17:12:28 2017
  Subject: Revert [TypeFeedbackVector] Root literal arrays in function literal slots

Bisect Details
  Configuration: android_nexus5X_perf_bisect
  Benchmark    : v8.infinite_scroll-ignition_tbmv2
  Metric       : memory:chrome:all_processes:reported_by_chrome:v8:effective_size_avg/memory:chrome:all_processes:reported_by_chrome:v8:effective_size_avg
  Change       : 3.41% | 42350383.6444 -> 43871067.0667

Revision                           Result                   N
chromium@445283                    42350384 +- 904997       9      good
chromium@445283,v8@f09e57923a      42338973 +- 443351       9      good
chromium@445283,v8@7ff8d317b1      42587148 +- 484537       6      good
chromium@445283,v8@f604724448      42570815 +- 594997       6      good
chromium@445283,v8@55feaaea4c      43909323 +- 1027757      6      bad       <--
chromium@445283,v8@5e44cc79d5      43759321 +- 631370       6      bad
chromium@445283,v8@c70ec473ba      43741673 +- 950665       6      bad
chromium@445283,v8@e26a58e43c      43381515 +- 788755       6      bad
chromium@445284                    43528798 +- 1924159      9      bad
chromium@445285                    43832394 +- 842345       6      bad
chromium@445287                    43871067 +- 678469       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests v8.infinite_scroll-ignition_tbmv2

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8989590119207379344

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5690258995281920


| 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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