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Issue 647626 link

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Issue metadata

Status: Fixed
Owner:
Closed: Oct 2016
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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72% regression in smoothness.sync_scroll.key_mobile_sites_smooth at 417874:417887

Project Member Reported by primiano@chromium.org, Sep 16 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=647626

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg2aPitAkM


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

android-one
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Sep 16 2016


===== 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@417873  17.5577  1.30227  18  good
chromium@417887  17.3732  2.79847  18  bad

Bisect job ran on: android_one_perf_bisect
Bug ID: 647626

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests smoothness.sync_scroll.key_mobile_sites_smooth
Test Metric: first_gesture_scroll_update_latency/http___www.baidu.com_s?wd_barack+obama_rsv_bp_0_rsv_spt_3_rsv_sug3_9_rsv_sug_0_rsv_sug4_3824_rsv_sug1_3_inputT_4920
Relative Change: 7.15%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_one_perf_bisect/builds/1622
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9001370904435634784


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6405253224726528

| 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!
Project Member

Comment 5 by 42576172...@developer.gserviceaccount.com, Sep 23 2016


===== 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@417873  19.0786  3.96839  18  good
chromium@417887  18.0747  2.94073  18  bad

Bisect job ran on: android_one_perf_bisect
Bug ID: 647626

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests smoothness.sync_scroll.key_mobile_sites_smooth
Test Metric: first_gesture_scroll_update_latency/http___www.baidu.com_s?wd_barack+obama_rsv_bp_0_rsv_spt_3_rsv_sug3_9_rsv_sug_0_rsv_sug4_3824_rsv_sug1_3_inputT_4920
Relative Change: 12.05%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_one_perf_bisect/builds/1632
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9000819019989749264


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5340582732365824

| 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!
Status: Fixed (was: Assigned)
This is a recovery of a previous improvement. Probably should not have been filed.

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