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Issue 759572 link

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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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5.9% regression in smoothness.top_25_smooth at 497558:497643

Project Member Reported by kraynov@chromium.org, Aug 28 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 28 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759572

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=37743a9ef94e042b064f8fd56a4c07b360fd1fe7384891b71bfdf9b9ac5fbad8


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

chromium-rel-mac11-pro
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 28 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_pro_perf_bisect
  Benchmark    : smoothness.top_25_smooth
  Metric       : frame_times/Weather.com
  Change       : 2.05% | 17.1645704244 -> 17.5164698915

Revision             Result                   N
chromium@497557      17.1646 +- 0.285184      6      good
chromium@497600      17.1663 +- 0.230313      6      good
chromium@497611      17.1967 +- 0.278065      9      good
chromium@497614      17.1856 +- 0.161704      9      good
chromium@497615      17.7097 +- 0.470865      6      bad       <--
chromium@497616      17.5414 +- 0.61885       9      bad
chromium@497617      17.7539 +- 0.459576      6      bad
chromium@497622      17.6005 +- 0.612448      6      bad
chromium@497643      17.5165 +- 0.146179      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=Weather.com smoothness.top_25_smooth

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970008399958625696


For feedback, file a bug with component Speed>Bisection

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