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Issue 722198 link

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Issue metadata

Status: Duplicate
Owner:
Closed: May 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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54.5% improvement in page_cycler_v2.top_10_mobile at 470445:470501

Project Member Reported by yhirano@chromium.org, May 15 2017

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=722198

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgqpaQpAoM


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

android-nexus5
Project Member

Comment 4 by 42576172...@developer.gserviceaccount.com, May 15 2017


=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : page_cycler_v2.top_10_mobile
  Metric       : timeToFirstContentfulPaint_avg/pcv1-warm/https___m.facebook.com_rihanna

Revision             Result                  N
chromium@470444      814.844 +- 1120.28      17      good
chromium@470501      464.844 +- 95.082       21      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=https...m.facebook.com.rihanna page_cycler_v2.top_10_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8979553723432705344

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6357962181836800


| 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 Speed>Bisection.  Thank you!
Project Member

Comment 6 by 42576172...@developer.gserviceaccount.com, May 15 2017

Mergedinto: 721238
Status: Duplicate (was: Assigned)

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

Suspected Commit
  Author : yhirano
  Commit : 91088a195969f5af61f404c9f02edc622cbe373a
  Date   : Wed May 10 05:49:31 2017
  Subject: Add Field Trial Testing Configuration for MojoLoading

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : page_cycler_v2.top_10_mobile
  Metric       : timeToFirstContentfulPaint_avg/pcv1-warm/https___m.facebook.com_rihanna
  Change       : 51.73% | 954.734444444 -> 460.8574

Revision             Result                  N
chromium@470444      954.734 +- 520.254      9       good
chromium@470473      1018.38 +- 65.0811      6       good
chromium@470487      983.4 +- 499.28         13      good
chromium@470489      868.286 +- 1094.04      19      good
chromium@470490      529.767 +- 737.443      17      bad       <--
chromium@470491      463.402 +- 60.1806      13      bad
chromium@470494      466.643 +- 53.6113      5       bad
chromium@470501      460.857 +- 21.806       5       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=https...m.facebook.com.rihanna page_cycler_v2.top_10_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8979553730281121136

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=4627516637052928


| 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 Speed>Bisection.  Thank you!
Project Member

Comment 7 by 42576172...@developer.gserviceaccount.com, May 15 2017


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

Suspected Commit
  Author : yhirano
  Commit : 91088a195969f5af61f404c9f02edc622cbe373a
  Date   : Wed May 10 05:49:31 2017
  Subject: Add Field Trial Testing Configuration for MojoLoading

Bisect Details
  Configuration: android_nexus5_perf_bisect
  Benchmark    : page_cycler_v2.top_10_mobile
  Metric       : timeToFirstContentfulPaint_avg/pcv1-warm/https___m.facebook.com_rihanna
  Change       : 58.39% | 1000.16 -> 412.147625

Revision             Result                  N
chromium@470444      1000.16 +- 74.6405      6       good
chromium@470473      1016.47 +- 54.798       9       good
chromium@470487      824.228 +- 889.077      13      good
chromium@470489      926.482 +- 266.773      5       good
chromium@470490      465.593 +- 23.219       6       bad       <--
chromium@470491      470.621 +- 60.7607      13      bad
chromium@470494      436.567 +- 172.176      11      bad
chromium@470501      412.148 +- 215.928      8       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=https...m.facebook.com.rihanna page_cycler_v2.top_10_mobile

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8979529731641767440

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6357962181836800


| 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 Speed>Bisection.  Thank you!

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