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Issue 719503 link

Starred by 1 user
Status: Duplicate
Merged: issue 719502
Owner: ----
Closed: May 2017
Cc:
█ kraynov@google.com
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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14.5% regression in system_health.common_desktop at 469112:469251

Project Member Reported by kraynov@chromium.org, May 8 2017 
See the link to graphs below.

Comment 1 by kraynov@chromium.org, May 8 2017 

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=719503

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgipfcugoM


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

chromium-rel-mac11-pro
Project Member

Comment 4 by 42576172...@developer.gserviceaccount.com, May 8 2017 


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

Bisect Details
  Configuration: mac_pro_perf_bisect
  Benchmark    : system_health.common_desktop
  Metric       : timeToFirstContentfulPaint_avg/browse_media/browse_media_pinterest

Revision             Result                  N
chromium@469111      362.125 +- 162.141      21      good
chromium@469251      360.429 +- 143.128      21      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse.media.pinterest system_health.common_desktop

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8980153850724048256

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5271675228127232


| 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 8 2017

Mergedinto: 719502
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : yhirano
  Commit : bb924e1897f5b4c67325dbfbdf2441e7f0686d53
  Date   : Wed May 03 18:42:19 2017
  Subject: Separate preaload matching from MemoryCache

Bisect Details
  Configuration: mac_pro_perf_bisect
  Benchmark    : system_health.common_desktop
  Metric       : timeToFirstContentfulPaint_avg/browse_media/browse_media_pinterest
  Change       : 12.46% | 319.113777779 -> 358.865629627

Revision             Result                  N
chromium@469004      319.114 +- 194.061      9       good
chromium@469031      297.641 +- 39.8625      6       good
chromium@469045      311.347 +- 72.7266      14      good
chromium@469046      349.112 +- 102.58       14      bad       <--
chromium@469047      339.998 +- 61.9646      9       bad
chromium@469049      360.468 +- 59.064       6       bad
chromium@469052      360.329 +- 54.3754      6       bad
chromium@469058      360.599 +- 97.7554      9       bad
chromium@469111      358.866 +- 55.7104      9       bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse.media.pinterest system_health.common_desktop

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8980153836317950464

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5025290134224896


| 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 8 2017 


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

Bisect Details
  Configuration: mac_pro_perf_bisect
  Benchmark    : system_health.common_desktop
  Metric       : timeToFirstContentfulPaint_avg/browse_media/browse_media_pinterest

Revision             Result                  N
chromium@469111      356.896 +- 136.181      21      good
chromium@469251      367.38 +- 120.587       21      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse.media.pinterest system_health.common_desktop

Debug Info
  https://chromeperf.appspot.com/buildbucket_job_status/8980145031079082464

Is this bisect wrong?
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5271675228127232


| 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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