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Issue metadata

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



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525.7% regression in memory.long_running_idle_gmail_background_tbmv2 at 441109:441124

Project Member Reported by primiano@chromium.org, Jan 4 2017

Issue description

I suspect https://codereview.chromium.org/2589363003 but let's see what the bisect says
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=678284

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg_5LApQoM


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

android-nexus7v2
Mergedinto: 678286
Status: Duplicate (was: Untriaged)

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


===== SUSPECTED CL(s) =====
Subject : Use timer task runner for V8PerIsolate tasks
Author  : altimin
Commit description:
  
Per the effort of getting rid of default task queue in scheduler, post per-isolate
tasks to renderer-wide timer task queue.

BUG= 676805 

Review-Url: https://codereview.chromium.org/2589363003
Cr-Commit-Position: refs/heads/master@{#441114}
Commit  : 124814c8025c564a6f494a3c9d4c887d57b98f1e
Date    : Tue Jan 03 14:09:53 2017


===== TESTED REVISIONS =====
Revision         Mean     Std Dev   N  Good?
chromium@441108  1.50338  0.386988  6  good
chromium@441112  1.47484  1.32699   6  good
chromium@441113  1.2836   0.466044  6  good
chromium@441114  9.84122  6.83637   6  bad    <--
chromium@441116  9.46202  8.52384   6  bad
chromium@441124  11.4799  8.45623   6  bad

Bisect job ran on: android_nexus7_perf_bisect
Bug ID: 678284

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests memory.long_running_idle_gmail_background_tbmv2
Test Metric: v8-gc-total_avg/v8-gc-total_avg
Relative Change: 663.60%

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus7_perf_bisect/builds/3574
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8991378828780609680


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5271122898059264

| 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!

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