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Issue metadata

Status: Duplicate
Merged: issue 606891
Owner:
Last visit > 30 days ago
Closed: Apr 2016
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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6.9% regression in tracing.tracing_with_debug_overhead at 389544:389583

Project Member Reported by pmeenan@chromium.org, Apr 26 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=606879

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg5Mu9owoM


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

android-nexus5X
Project Member

Comment 2 by 42576172...@developer.gserviceaccount.com, Apr 26 2016

Mergedinto: 606891
Status: Duplicate (was: Assigned)

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


===== SUSPECTED CL(s) =====
Subject : (Reland) content: Enable image decode tasks on android.
Author  : vmpstr
Commit description:
  
This patch enables image decode tasks on android.

R=enne@chromium.org, sievers@chromium.org

Review URL: https://codereview.chromium.org/1903973004

Cr-Commit-Position: refs/heads/master@{#389579}
Commit  : 6c0b5111741a42f7f4abc0d839c074bedde118a8
Date    : Mon Apr 25 22:14:43 2016


===== TESTED REVISIONS =====
Revision                Mean Value  Std. Dev.   Num Values  Good?
chromium@389543         3592113.2   46348.2235825           good
chromium@389563         3716121.0   53200.8092316           good
chromium@389573         3705514.0   55167.79798 6           good
chromium@389578         3726845.0   86707.4255186           good
chromium@389579         3897610.4   67304.6131585           bad         <-
chromium@389580         3877448.75  64996.13959 8           bad
chromium@389581         3905211.25  52838.3625248           bad
chromium@389583         3923926.5   53567.6625176           bad

Bisect job ran on: android_nexus5X_perf_bisect
Bug ID: 606879

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests tracing.tracing_with_debug_overhead
Test Metric: Max event size in bytes per second/Max event size in bytes per second
Relative Change: 8.96%
Score: 99.0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5X_perf_bisect/builds/121
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9014291741199027392


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5796238427947008

| 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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