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Issue 656745 link

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Issue metadata

Status: WontFix
Owner: ----
Closed: Dec 2016
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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31.2%-32.6% regression in page_cycler_v2.typical_25 at 424273:424309

Project Member Reported by jasontiller@chromium.org, Oct 17 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=656745

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgrae4rQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgran9pQoM


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

chromium-rel-mac-retina
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Oct 18 2016


===== BISECT JOB RESULTS =====
Status: failed


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N   Good?
chromium@424272  316.146  43.8849  11  good
chromium@424291  298.289  36.0173  10  good
chromium@424294  359.939  28.4507  8   bad
chromium@424296  372.802  15.5321  8   bad
chromium@424300  365.503  31.8858  12  bad
chromium@424309  360.253  37.2391  12  bad

Bisect job ran on: mac_retina_perf_bisect
Bug ID: 656745

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests page_cycler_v2.typical_25
Test Metric: timeToFirstMeaningfulPaint_avg/pcv1-warm/http___arstechnica.com_
Relative Change: 8.98%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_retina_perf_bisect/builds/1743
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8998530303606750624


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5809062011207680

| 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 Tests>AutoBisect.  Thank you!
Project Member

Comment 5 by 42576172...@developer.gserviceaccount.com, Oct 19 2016

Bisect failed: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_retina_perf_bisect/builds/1756
Failure reason: the build has failed.
Additional errors:
The metric was not found in the test output.
Either of the initial "good" or "bad" revisions failed to be tested or built.

Status: WontFix (was: Untriaged)
The regression is just a recovery from an earlier improvement. I think it can be safely ignored.
Screen Shot 2016-12-08 at 4.03.24 PM.png
141 KB View Download

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