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Issue 641745 link

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Issue metadata

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



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3.2%-4.4% regression in speedometer at 414712:414739

Project Member Reported by nikolaos@chromium.org, Aug 28 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=641745

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg_pnu7AkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICggaiJtgkM


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

chromium-rel-win7-x64-dual
chromium-rel-win8-dual
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 28 2016

Cc: tkent@chromium.org
Owner: tkent@chromium.org

=== Auto-CCing suspected CL author tkent@chromium.org ===

Hi tkent@chromium.org, the bisect results pointed to your CL below as possibly
causing a regression. Please have a look at this info and see whether
your CL be related.


===== BISECT JOB RESULTS =====
Status: completed


===== SUSPECTED CL(s) =====
Subject : Use Node stream printer in Node::showNode().
Author  : tkent
Commit description:
  
This is a preparation to remove WTFLogAlwasy() from Node.cpp.
This CL has no behavior changes.

BUG= 638849 

Review-Url: https://codereview.chromium.org/2282683002
Cr-Commit-Position: refs/heads/master@{#414726}
Commit  : 9d0702c27c930fc345318da2db6f33b2769bff5c
Date    : Fri Aug 26 16:15:33 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N  Good?
chromium@414723  770.199  3.73583  5  good
chromium@414725  774.093  2.62895  5  good
chromium@414726  799.186  5.77827  5  bad    <--
chromium@414729  782.785  6.11548  8  bad

Bisect job ran on: win_8_perf_bisect
Bug ID: 641745

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests speedometer
Test Metric: jQuery-TodoMVC/jQuery-TodoMVC
Relative Change: 1.71%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/win_8_perf_bisect/builds/2161
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9003084562492868832


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6131822537211904

| 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!

Comment 4 by tkent@chromium.org, Aug 29 2016

Status: WontFix (was: Assigned)
The graph looks a flakiness.


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