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Issue 632705 link

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Issue metadata

Status: WontFix
Owner: ----
Closed: Feb 2017
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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10.5% regression in smoothness.top_25_smooth at 408406:408448

Project Member Reported by alexclarke@chromium.org, Jul 29 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=632705

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgxpbVqgoM


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

chromium-rel-mac-retina
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Jul 29 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@408405  12.1647  0.31211   18  good
chromium@408448  12.2357  0.340686  18  bad

Bisect job ran on: mac_retina_perf_bisect
Bug ID: 632705

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests smoothness.top_25_smooth
Test Metric: mean_input_event_latency/Pinterest
Relative Change: 2.92%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_retina_perf_bisect/builds/1471
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9005800204875837712


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5790508610224128

| 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!
Trying another bisect.

===== 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@408405  12.2382  0.588438  18  good
chromium@408600  12.2804  0.344531  18  bad

Bisect job ran on: mac_retina_perf_bisect
Bug ID: 632705

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests smoothness.top_25_smooth
Test Metric: mean_input_event_latency/Pinterest
Relative Change: 2.70%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_retina_perf_bisect/builds/1491
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9005541070063724848


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5773366858874880

| 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!
Trying a couple of bisects on the pages that actually regressed - hopefully should get a clearer signal.
Tried a bisect with a larger range on the page with the regression.
Perf sheriff ping: reminder to follow up on possible performance issues
Owner: ----
Perf sheriff fixit: unsetting owners where reporter==owner, to clarify the current member of the rotation is responsible for triage.
Status: Untriaged (was: Assigned)
Rekicking last bisect - it timed out.
Project Member

Comment 14 by 42576172...@developer.gserviceaccount.com, Nov 10 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@408364  11.8766  0.532071  18  good
chromium@408448  11.9617  0.356313  18  bad

Bisect job ran on: mac_retina_perf_bisect
Bug ID: 632705

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=Pinterest smoothness.top_25_smooth
Test Metric: mean_input_event_latency/Pinterest
Relative Change: 0.86%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_retina_perf_bisect/builds/1810
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8996420588013602240


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5804409836011520

| 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: WontFix (was: Untriaged)
These regressions happened before M56 branch. M56 is now in stable. These regressions made it to the stable channel. Marking wontfix.
Labels: Performance-Responsiveness

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