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Issue 663123 link

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Issue metadata

Status: Duplicate
Merged: issue 662391
Owner: ----
Closed: Nov 2016
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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149.2% regression in smoothness.top_25_smooth at 429340:429384

Project Member Reported by briander...@chromium.org, Nov 7 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=663123

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg48H3owkM


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

chromium-rel-mac-retina

===== 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     Std Dev  N   Good?
chromium@429339  16.7349  3.61464  18  good
chromium@429384  17.1617  2.85973  18  bad

Bisect job ran on: mac_retina_perf_bisect
Bug ID: 663123

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests smoothness.top_25_smooth
Test Metric: mean_input_event_latency/LinkedIn
Relative Change: 7.89%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_retina_perf_bisect/builds/1793
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8996609202242358400


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5833836401786880

| 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!
Mergedinto: 662391
Status: Duplicate (was: Untriaged)

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


===== SUSPECTED CL(s) =====
Subject : Revert "Touchpad scroll latching enabled for Mac behind flag."
Author  : sahel
Commit description:
  
This fixes Android scrollbar fading regression.

reverted cl: https://crrev.com/2256733003

TBR=aelias@chromium.org
BUG= 649122 , 526463
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel

Review-Url: https://codereview.chromium.org/2467023003
Cr-Commit-Position: refs/heads/master@{#429316}
Commit  : d6036a082e4eea1c402dbd5d294dee1581ff201a
Date    : Wed Nov 02 17:26:20 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev   N  Good?
chromium@429215  7.3222   0.884533  5  good
chromium@429305  7.2902   0.57626   5  good
chromium@429311  7.4184   0.655533  5  good
chromium@429314  7.0232   0.489197  5  good
chromium@429315  7.447    0.576071  5  good
chromium@429316  18.923   0.392339  5  bad    <--
chromium@429317  16.0244  4.28535   5  bad
chromium@429328  18.5018  0.177698  5  bad
chromium@429350  17.6604  2.49503   5  bad
chromium@429394  15.6866  4.00854   5  bad
chromium@429573  13.173   5.21054   5  bad

Bisect job ran on: mac_retina_perf_bisect
Bug ID: 663123

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=LinkedIn smoothness.top_25_smooth
Test Metric: mean_input_event_latency/LinkedIn
Relative Change: 79.90%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_retina_perf_bisect/builds/1805
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8996522376426793328


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5775827365527552

| 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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