New issue
Advanced search Search tips

Issue 705395 link

Starred by 1 user

Issue metadata

Status: Duplicate
Merged: issue 705394
Owner: ----
Closed: Mar 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



Sign in to add a comment

29.3%-89.8% regression in blink_perf.bindings at 459641:459648

Project Member Reported by toyoshim@chromium.org, Mar 27 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Mar 27 2017

Mergedinto: 705394
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Peter Marshall
  Commit : 14e01da1cf6c02628252ed267ca5043f44d63a5d
  Date   : Fri Mar 24 17:40:22 2017
  Subject: [builtins] Port TypedArrayConstructByArrayLike to CodeStubAssembler.

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : blink_perf.bindings
  Metric       : typed-array-construct-from-array/typed-array-construct-from-array
  Change       : 31.77% | 3.27830170017 -> 2.23679863302

Revision                           Result                    N
chromium@459640                    3.2783 +- 0.0947473       6      good
chromium@459642                    3.27692 +- 0.106214       6      good
chromium@459642,v8@7273f7011a      3.49841 +- 0.29368        5      good
chromium@459642,v8@7e08a77deb      3.42956 +- 0.0952439      6      good
chromium@459642,v8@14e01da1cf      2.20575 +- 0.075152       6      bad       <--
chromium@459642,v8@5fdb5a148e      2.23538 +- 0.107649       6      bad
chromium@459643                    2.2368 +- 0.0828408       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 blink_perf.bindings

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8983987350440105936

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5497759559319552


| 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!

Sign in to add a comment