New issue
Advanced search Search tips
Note: Color blocks (like or ) mean that a user may not be available. Tooltip shows the reason.

Issue 759643 link

Starred by 1 user

Issue metadata

Status: Duplicate
Merged: issue 758277
Owner: ----
Closed: Aug 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



Sign in to add a comment

16.4% regression in thread_times.key_mobile_sites_smooth at 495293:495369

Project Member Reported by kraynov@chromium.org, Aug 28 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 28 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759643

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=5cf7f72d034fcf5331932a7e9f567ad56f5ada40f0f3ea8238720a36ae36daaf


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

android-nexus5
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 29 2017

Mergedinto: 758277
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Charles Harrison
  Commit : 007abddf6ad7f7d3f1491217119e3e7166faaace
  Date   : Thu Aug 17 21:39:49 2017
  Subject: Testing config: doc.write blocking change on slow connections only

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : thread_times.key_mobile_sites_smooth
  Metric       : thread_total_all_cpu_time_per_frame/http___www.boingboing.net
  Change       : 18.98% | 20.7613017393 -> 24.7019202748

Revision             Result                   N
chromium@495292      20.7613 +- 2.3985        6      good
chromium@495312      21.6544 +- 2.25516       6      good
chromium@495322      21.225 +- 2.71102        6      good
chromium@495325      20.1642 +- 2.18828       6      good
chromium@495326      20.565 +- 2.23198        6      good
chromium@495327      25.1376 +- 1.43368       6      bad       <--
chromium@495331      24.495 +- 2.07883        6      bad
chromium@495369      24.7019 +- 0.973386      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=http...www.boingboing.net thread_times.key_mobile_sites_smooth

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970001920660097776


For feedback, file a bug with component Speed>Bisection

Sign in to add a comment