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Issue 663124 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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15% regression in smoothness.top_25_smooth at 429377:429438

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=663124

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg46KB6ggM


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

chromium-rel-mac10

===== 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@429376  59.785  3.04046  18  good
chromium@429438  60.5    5.37425  18  bad

Bisect job ran on: mac_10_10_perf_bisect
Bug ID: 663124

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: percentage_smooth/Blogger
Relative Change: 2.20%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_10_10_perf_bisect/builds/2468
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8996609160112027344


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5776915468648448

| 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@429251  70.3423  1.96896  5  good
chromium@429308  69.9625  2.7342   8  good
chromium@429312  69.3306  2.18873  8  good
chromium@429314  70.4326  3.50824  8  good
chromium@429315  70.6309  1.42047  5  good
chromium@429316  61.6275  3.75919  5  bad    <--
chromium@429323  59.8224  1.99437  5  bad
chromium@429337  61.5134  3.23436  8  bad
chromium@429365  60.1115  3.48377  5  bad
chromium@429479  59.8757  1.9227   5  bad
chromium@429706  59.2638  2.46987  5  bad
chromium@430161  60.7219  2.59621  5  bad

Bisect job ran on: mac_10_10_perf_bisect
Bug ID: 663124

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=Blogger smoothness.top_25_smooth
Test Metric: percentage_smooth/Blogger
Relative Change: 13.68%
Score: 99.5

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_10_10_perf_bisect/builds/2473
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8996522715829415232


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5234403788193792

| 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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