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Issue 759595 link

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Issue metadata

Status: Duplicate
Merged: issue 759554
Owner: ----
Closed: Aug 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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5.4% regression in thread_times.key_mobile_sites_smooth at 497558:497657

Project Member Reported by kraynov@chromium.org, Aug 28 2017

Issue description

See the link to graphs below.
 
Project Member

Comment 1 by 42576172...@developer.gserviceaccount.com, Aug 28 2017

All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=759595

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=ac0ad7b9a64b78a5370e79448c8900e0a02c710874d390d16d376f2e7f9199e4


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

android-nexus7v2
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Aug 28 2017

Mergedinto: 759554
Status: Duplicate (was: Untriaged)

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

Suspected Commit
  Author : Sunny Sachanandani
  Commit : 9b8fb34db903643b759635086dcf0da90b1e3082
  Date   : Sat Aug 26 00:49:56 2017
  Subject: gpu: Command buffer multi flush.

Bisect Details
  Configuration: android_nexus7_perf_bisect
  Benchmark    : thread_times.key_mobile_sites_smooth
  Metric       : thread_GPU_cpu_time_per_frame/http___cuteoverload.com
  Change       : 4.69% | 3.00673304636 -> 3.14762280688

Revision             Result                    N
chromium@497557      3.00673 +- 0.113627       6      good
chromium@497607      2.90744 +- 0.0911781      6      good
chromium@497614      2.90401 +- 0.0829124      6      good
chromium@497615      3.1478 +- 0.187909        6      bad       <--
chromium@497616      3.17541 +- 0.0939959      6      bad
chromium@497617      3.2054 +- 0.0799178       6      bad
chromium@497620      3.20563 +- 0.0808078      6      bad
chromium@497632      3.1754 +- 0.0934123       6      bad
chromium@497657      3.14762 +- 0.079324       6      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=http...cuteoverload.com thread_times.key_mobile_sites_smooth

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970006568015248592


For feedback, file a bug with component Speed>Bisection

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