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Issue 755984 link

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Issue metadata

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



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50%-2616.2% regression in page_cycler_v2.basic_oopif at 494037:494089

Project Member Reported by ellenpli@google.com, Aug 16 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 16 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=755984

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=c0707e1ee8d0f8975a693ca4fa5f0e4c48e5f788ba11c2f33e2ca716ab3eb9bb


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

chromium-rel-win7-gpu-intel
chromium-rel-win7-gpu-nvidia
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 16 2017

Mergedinto: 755607
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : perezju
  Commit : 122dd5e91bf64888049459ce73a8fd34c084cfe0
  Date   : Mon Aug 14 12:28:51 2017
  Subject: [Telemetry] Reuse shared state between story runs

Bisect Details
  Configuration: winx64nvidia_perf_bisect
  Benchmark    : page_cycler_v2.basic_oopif
  Metric       : timeToFirstContentfulPaint_avg/pcv1-warm/http___booking.com
  Change       : 2932.29% | 88.7341666718 -> 2690.681

Revision                                 Result                  N
chromium@494036                          88.7342 +- 4.71684      6      good
chromium@494043                          88.169 +- 6.66085       6      good
chromium@494046                          87.1858 +- 5.33599      6      good
chromium@494046,catapult@122dd5e91b      2776.2 +- 1097.66       5      bad       <--
chromium@494047                          2540.95 +- 590.647      6      bad
chromium@494048                          2646.78 +- 682.825      6      bad
chromium@494049                          2714.6 +- 562.691       6      bad
chromium@494062                          2691.23 +- 930.048      6      bad
chromium@494087                          2690.68 +- 296.588      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=http...booking.com page_cycler_v2.basic_oopif

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8971096183235483136


For feedback, file a bug with component Speed>Bisection

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