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Issue metadata

Status: Duplicate
Merged: issue 591406
Owner:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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15.2% regression in memory.long_running_idle_gmail at 378452:378467

Project Member Reported by ulan@google.com, Mar 23 2016

Issue description

See the link to graphs below.
 

Comment 1 by ulan@google.com, Mar 23 2016

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=597235

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDA34OiuQoM


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

chromium-rel-win10
Project Member

Comment 2 by 42576172...@developer.gserviceaccount.com, Mar 23 2016


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


=== Bisection aborted ===
The bisect was aborted because The metric values for the initial "good" and "bad" revisions do not represent a clear regression.
Please contact the the team (see below) if you believe this is in error.

=== Warnings ===
The following warnings were raised by the bisect job:

 * Bisect failed to reproduce the regression with enough confidence.

===== TESTED REVISIONS =====
Revision                Mean Value  Std. Dev.   Num Values  Good?
chromium@378451         81634.1178242120.833645 18          good
chromium@378467         81909.0398341683.433185 18          bad

Bisect job ran on: winx64_10_perf_bisect
Bug ID: 597235

Test Command: python src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --also-run-disabled-tests memory.long_running_idle_gmail
Test Metric: V8_MemoryHeapSampleTotalUsed/https___mail.google.com_mail_
Relative Change: 0.03%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/winx64_10_perf_bisect/builds/474
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9017404176756644512


| 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 label Cr-Tests-AutoBisect.  Thank you!
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Mar 23 2016


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


===== SUSPECTED CL(s) =====
Subject : [DevTools] Postpone more agents instantiation until attached.
Author  : dgozman
Commit description:
  
To support multiple attached devtools, we have to instantiate
individual agents on demand, rather than on creation.
This patch moves most of agents, with only worker and inspector to go.

BUG= 590878 

Review URL: https://codereview.chromium.org/1746393003

Cr-Commit-Position: refs/heads/master@{#378509}
Commit  : b547858514737d59af3c55b2b06b4e511624c304
Date    : Tue Mar 01 19:17:51 2016


===== TESTED REVISIONS =====
Revision                Mean Value  Std. Dev.   Num Values  Good?
chromium@378400         112893.7165061434.942535 5           good
chromium@378500         112779.6977951954.645633 5           good
chromium@378507         113290.799201836.520946  5           good
chromium@378508         113826.9492461911.051385 5           good
chromium@378509         126046.4898721156.357802 5           bad
chromium@378510         126725.969297633.251572  5           bad
chromium@378513         126785.1923471178.730005 5           bad
chromium@378525         127152.2871421428.238898 5           bad
chromium@378550         126592.4902611003.989285 5           bad
chromium@378600         126268.2938591516.63646  5           bad

Bisect job ran on: linux_perf_bisect
Bug ID: 597235

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --also-run-disabled-tests memory.long_running_idle_gmail
Test Metric: V8_MemoryHeapSampleTotalCommitted/https___mail.google.com_mail_
Relative Change: 11.85%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/linux_perf_bisect/builds/6338
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9017395035748493312


| 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 label Cr-Tests-AutoBisect.  Thank you!

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