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Issue metadata

Status: Duplicate
Merged: issue 759554
Owner: ----
Closed: Aug 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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178.4% regression in v8.runtimestats.browsing_desktop at 497585:497650

Project Member Reported by ulan@google.com, Aug 30 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 30 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=760525

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=47c0c2925139246a9e935971d9db152979e80c3d7da6a1a8eb9e110f44526ec9


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

chromium-rel-mac-retina
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 30 2017

Mergedinto: 759554
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Sunny Sachanandani
  Commit : 9b8fb34db903643b759635086dcf0da90b1e3082
  Date   : Sat Aug 26 00:49:56 2017
  Subject: gpu: Command buffer multi flush.

Bisect Details
  Configuration: mac_retina_perf_bisect
  Benchmark    : v8.runtimestats.browsing_desktop
  Metric       : v8-gc-memory-mark-compactor_sum/browse_tech/browse_tech_discourse_infinite_scroll
  Change       : 179.38% | 12.9538333333 -> 36.1908333333

Revision             Result                  N
chromium@497584      12.9538 +- 3.84174      6      good
chromium@497601      12.698 +- 1.78003       6      good
chromium@497609      13.3813 +- 2.76744      6      good
chromium@497613      12.397 +- 2.14223       6      good
chromium@497614      13.5613 +- 2.35092      6      good
chromium@497615      30.1215 +- 14.1191      6      bad       <--
chromium@497617      31.2723 +- 11.1897      6      bad
chromium@497650      36.1908 +- 5.56906      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.tech.discourse.infinite.scroll v8.runtimestats.browsing_desktop

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8969838680968620672


For feedback, file a bug with component Speed>Bisection

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