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Issue 708559 link

Starred by 2 users

Issue metadata

Status: Duplicate
Merged: issue 708644
Owner: ----
Closed: Apr 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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1%-3.2% regression in memory.top_10_mobile at 460776:460841

Project Member Reported by pmeenan@chromium.org, Apr 5 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=708559

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3OrwoQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnJvQ-AkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnOupkQgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7IuspAgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnP2_5AoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3N37tgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnP2ruQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3Lnk7QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnKbwgggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnNDl5QsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnMKHzwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3IbmuAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3JSFtgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnPPXowkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnK_IvwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnKL-iAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7IusxAgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnMH59ggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7PmqsQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3KK6_AoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnL2uqwsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnPzE5goM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3OTx7QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3IKr9wgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3P7atAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnPfFvgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnNnf7ggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnN286QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3KLVsgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnNOFywgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnPna_AoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7OrKtAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3MLOsAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnLedsgoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7PWilAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7LXziQgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3JDksAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7IvBtAsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnKeZ7woM


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

android-nexus6
android-webview-nexus6
Mergedinto: 708644
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : tzik
  Commit : e5de8d551e80115b21e0e3ca7d5451d3cee6f3ba
  Date   : Thu Mar 30 18:05:46 2017
  Subject: Clear PostTaskAndReply task on the destination thread

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : memory.top_10_mobile
  Metric       : memory:webview:all_processes:reported_by_chrome:malloc:effective_size_avg/background/after_http_m_intl_taobao_com_group_purchase_html
  Change       : 2.94% | 35937335.3333 -> 36994380.0

Revision             Result                   N
chromium@460818      35937335 +- 679373       6      good
chromium@460820      36159851 +- 525177       6      good
chromium@460821      36856557 +- 1183138      9      bad       <--
chromium@460824      37091631 +- 932509       6      bad
chromium@460830      36890371 +- 509808       6      bad
chromium@460841      36994380 +- 1211047      6      bad

Please refer to the following doc on diagnosing memory regressions:
  https://chromium.googlesource.com/chromium/src/+/master/docs/memory-infra/memory_benchmarks.md

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests memory.top_10_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8983144468392096192

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5527454258561024


| 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 Speed>Bisection.  Thank you!

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