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Issue metadata

Status: Duplicate
Merged: issue 613892
Owner:
Last visit > 30 days ago
Closed: Jun 2016
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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7.9% regression in thread_times.tough_scrolling_cases at 395145:395165

Project Member Reported by rsch...@chromium.org, Jun 2 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=616874

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgzNCjqQoM


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

chromium-rel-mac-retina
Mergedinto: 613892
Status: Duplicate (was: Assigned)

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


===== SUSPECTED CL(s) =====
Subject : Add logic to ResourceProvider to correctly lock GpuMemoryBuffer Resources.
Author  : erikchen
Commit description:
  
The new logic will hold onto GpuMemoryBuffer Resources until they are no longer
in use by the Window Server.

BUG= 608026 
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Review-Url: https://codereview.chromium.org/1984873002
Cr-Commit-Position: refs/heads/master@{#395150}
Commit  : 87aa976eacd8ed0c530d32a7c85d6ba706dcabf6
Date    : Fri May 20 20:16:53 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev     N  Good?
chromium@395144  9.9714   0.0271573   5  good
chromium@395147  9.94556  0.0766619   5  good
chromium@395149  9.96148  0.0296594   5  good
chromium@395150  10.7068  0.00794463  5  bad    <--
chromium@395155  10.7012  0.0231208   5  bad
chromium@395165  10.7111  0.0609586   5  bad

Bisect job ran on: mac_retina_perf_bisect
Bug ID: 616874

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests thread_times.tough_scrolling_cases
Test Metric: thread_total_all_cpu_time_per_frame/thread_total_all_cpu_time_per_frame
Relative Change: 7.42%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_retina_perf_bisect/builds/1315
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9010935400217175520


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5797627430436864

| 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!
Labels: -performance-sheriff Performance-Sheriff SHC
Labels: -SHC SystemHealth-Council

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