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29.5% regression in smoothness.top_25_smooth at 419607:419667 |
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Issue descriptionSee the link to graphs below.
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Sep 21 2016
Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9000921917589601616
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Sep 21 2016
===== BISECT JOB RESULTS ===== Status: completed ===== SUSPECTED CL(s) ===== Subject : cc: Remove estimated parent draw time from renderer Author : enne Commit description: This is a display scheduler only concept now that unified begin frame is turned on. Renderers can just use the deadline passed to them from the top level begin frame source. This fixes a regression from https://codereview.chromium.org/2299003002 where Android was using the incorrect parent estimated draw time of none and so thought it had less time for frames than it did. R=brianderson@chromium.org BUG= 646377 CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel Review-Url: https://codereview.chromium.org/2352823002 Cr-Commit-Position: refs/heads/master@{#419617} Commit : bfdea7f114aded7866981b8bfe3edd0c75155f12 Date : Tue Sep 20 01:11:26 2016 ===== TESTED REVISIONS ===== Revision Mean Std Dev N Good? chromium@419606 6.3566 0.345477 5 good chromium@419614 6.3642 0.127087 5 good chromium@419616 6.399 0.382186 5 good chromium@419617 8.241 0.357029 5 bad <-- chromium@419618 7.9836 0.367154 5 bad chromium@419622 7.655 0.326746 5 bad chromium@419637 8.2126 0.237151 5 bad chromium@419667 8.331 0.495627 5 bad Bisect job ran on: android_nexus5_perf_bisect Bug ID: 648891 Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests smoothness.top_25_smooth Test Metric: mean_input_event_latency/Wordpress Relative Change: 31.06% Score: 99.9 Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus5_perf_bisect/builds/4136 Job details: https://chromeperf.appspot.com/buildbucket_job_status/9000921917589601616 Not what you expected? We'll investigate and get back to you! https://chromeperf.appspot.com/bad_bisect?try_job_id=6471066174619648 | 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! |
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Comment 1 by toyoshim@chromium.org
, Sep 21 2016