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Issue metadata

Status: Duplicate
Merged: issue 708545
Owner: ----
Closed: Apr 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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1.7% regression in v8.infinite_scroll_tbmv2 at 461695:461778

Project Member Reported by pmeenan@chromium.org, Apr 6 2017

Issue description

See the link to graphs below.
 
Mergedinto: 708545
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : ivica.bogosavljevic
  Commit : 74b8ef6cea108d55d479afe16ffa2b0e7bf90074
  Date   : Tue Apr 04 09:18:56 2017
  Subject: MIPS: Fix `[builtins] Reland of Port TypedArrayInitialize to CodeStubAssembler.`

Bisect Details
  Configuration: android_nexus6_perf_bisect
  Benchmark    : v8.infinite_scroll_tbmv2
  Metric       : memory:chrome:all_processes:reported_by_chrome:v8:effective_size_avg/flickr
  Change       : 0.85% | 2669982.0 -> 2692615.33333

Revision                           Result                  N
chromium@461694                    2669982 +- 1587.03      6      good
chromium@461695                    2669772 +- 473.413      6      good
chromium@461695,v8@68c14892cb      2669702 +- 229.668      6      good
chromium@461695,v8@45e3c56d40      2669694 +- 216.924      6      good
chromium@461695,v8@74b8ef6cea      2692914 +- 1969.35      6      bad       <--
chromium@461695,v8@ce06d1f232      2692622 +- 229.685      6      bad
chromium@461696                    2692739 +- 300.888      6      bad
chromium@461697                    2692495 +- 278.29       6      bad
chromium@461700                    2692655 +- 2.44949      6      bad
chromium@461705                    2692917 +- 1712.68      6      bad
chromium@461715                    2692651 +- 541.1        6      bad
chromium@461736                    2692535 +- 292.31       6      bad
chromium@461778                    2692615 +- 218.37       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 --story-filter=flickr v8.infinite_scroll_tbmv2

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8983050761176100784

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5893743766405120


| 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!

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