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Issue metadata

Status: WontFix
Owner:
Closed: Jul 2016
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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14.3%-144% regression in blink_perf.paint at 403611:403611

Project Member Reported by qyears...@chromium.org, Jul 5 2016

Issue description

See the link to graphs below.
 
Regression appears to be somewhere inside this v8 roll:

https://chromium.googlesource.com/chromium/src/+/02f7f5836dab4f3d269618f9b699f7555221d9b0

===== BISECT JOB RESULTS =====
Status: completed


===== TESTED REVISIONS =====
Revision                       Mean     Std Dev   N  Good?
chromium@403610                11.5628  0.24403   5  good
chromium@403610,v8@b1063f7a41  11.8258  0.421942  5  good
chromium@403610,v8@6f920d7d59  11.799   0.292271  5  good
chromium@403610,v8@5927deaaf1  11.6554  0.20612   5  good
chromium@403610,v8@317dc0578f  11.642   0.158832  5  good
chromium@403610,v8@486d181928  11.572   0.111191  5  good
chromium@403610,v8@de5beb45b8  11.924   0.194636  5  good
chromium@403611                28.7358  0.523173  5  bad

Bisect job ran on: linux_perf_bisect
Bug ID: 625895

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests blink_perf.bindings
Test Metric: serialize-nested-array/serialize-nested-array
Relative Change: 148.52%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/linux_perf_bisect/builds/6576
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9007832620493099248


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5870405764513792

| 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!

===== BISECT JOB RESULTS =====
Status: completed


===== TESTED REVISIONS =====
Revision                       Mean     Std Dev    N  Good?
chromium@403610                11.5116  0.116141   5  good
chromium@403610,v8@b1063f7a41  11.6016  0.182612   5  good
chromium@403610,v8@6f920d7d59  11.7152  0.386777   5  good
chromium@403610,v8@5927deaaf1  11.8978  0.216796   5  good
chromium@403610,v8@317dc0578f  11.8132  0.298088   5  good
chromium@403610,v8@486d181928  11.536   0.157002   5  good
chromium@403610,v8@de5beb45b8  11.4994  0.142012   5  good
chromium@403611                28.5226  0.0687699  5  bad

Bisect job ran on: linux_perf_bisect
Bug ID: 625895

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests blink_perf.bindings
Test Metric: serialize-nested-array/serialize-nested-array
Relative Change: 147.77%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/linux_perf_bisect/builds/6579
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9007781129927069328


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5780619473190912

| 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!

Comment 5 by peria@chromium.org, Jul 8 2016

Status: WontFix (was: Assigned)
Do not worry about regressions on serialize-nested-array benchmark.
This test is not serious one.

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