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Issue metadata

Status: Duplicate
Merged: issue 724954
Owner:
Closed: May 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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2.3%-14.3% regression in v8.infinite_scroll-classic_tbmv2 at 472711:472979

Project Member Reported by jochen@chromium.org, May 22 2017

Issue description

See the link to graphs below.
 

Comment 1 by jochen@chromium.org, May 22 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=724955

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguo6bvgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2snypAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2uPotwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2qOPpgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguvKDvwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2vWMvgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2tHq6gkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2pWOtwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguvKypgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2v3ipQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgupyjvQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgupyjvQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgupjEqwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2tWLrQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2piHkwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguuzbsQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2oqvoQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2uz1sgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2tWsqQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2u3u-gkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2pG2pAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgupzAqAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgurj4vQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2s2T4QkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguoC8pgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2tnH6AsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg2vrL9ggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDguuzopwoM


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

android-nexus5
android-nexus6
android-nexus7v2
chromium-rel-mac11
chromium-rel-mac11-pro
chromium-rel-win10
chromium-rel-win7-dual
chromium-rel-win7-gpu-intel
chromium-rel-win7-x64-dual
win-high-dpi
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, May 22 2017

Mergedinto: 724954
Status: Duplicate (was: Assigned)

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

Suspected Commit
  Author : Ross McIlroy
  Commit : de4a4095cf22bc3c9cfa13eb5f8be28eb7a5f031
  Date   : Thu May 18 10:41:48 2017
  Subject: [Heap] Disable code flushing in preparation to remove it.

Bisect Details
  Configuration: win_perf_bisect
  Benchmark    : v8.infinite_scroll-classic_tbmv2
  Metric       : memory:chrome:renderer_processes:reported_by_chrome:v8:heap:allocated_objects_size_avg/flickr
  Change       : 21.24% | 16036833.0 -> 19442533.0

Revision                           Result                   N
chromium@472776                    16036833 +- 393087       6      good
chromium@472827                    16804285 +- 1770687      6      good
chromium@472852                    16584434 +- 1562511      6      good
chromium@472854                    17196286 +- 2435930      6      good
chromium@472855                    16958797 +- 1300154      6      good
chromium@472855,v8@5e9939214e      16280809 +- 1161844      6      good
chromium@472855,v8@de4a4095cf      19054995 +- 1098490      6      bad       <--
chromium@472855,v8@cd1325a890      18824158 +- 1340215      6      bad
chromium@472855,v8@9fd599ef98      18980670 +- 2248511      6      bad
chromium@472856                    19481865 +- 1777074      6      bad
chromium@472859                    18729184 +- 1997227      6      bad
chromium@472865                    19111620 +- 1937653      5      bad
chromium@472877                    18941626 +- 1032895      6      bad
chromium@472977                    19442533 +- 1780208      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=flickr v8.infinite_scroll-classic_tbmv2

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8978913211642959664

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5848460848267264


| 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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