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58.7% regression in page_cycler_v2.intl_ar_fa_he at 454745:454885 |
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Issue descriptionBisect to follow. Looks multi-modal over last 100s of commits, so not sure if we'll find anything, may want to add benchmark owner.
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Mar 8 2017
Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8985656028472563696
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Mar 9 2017
=== BISECT JOB RESULTS === Perf regression found with culprit Suspected Commit Author : binji Commit : 5a04f4fd68d1d35d704cdc0dee0719c5354a8094 Date : Mon Feb 27 22:26:27 2017 Subject: This is a speculative chain of reverts to improve a Chrome Bisect Details Configuration: android_webview_nexus6_aosp_perf_bisect Benchmark : page_cycler_v2.intl_ar_fa_he Metric : timeToFirstMeaningfulPaint_avg/pcv1-warm/http___ynet.co.il_ Change : 57.01% | 1727.02566667 -> 2711.55983333 Revision Result N chromium@454744 1727.03 +- 65.4067 6 good chromium@454776 1721.69 +- 113.912 6 good chromium@454788 1847.21 +- 999.185 9 good chromium@454791 1723.26 +- 90.4852 9 good chromium@454793 1886.35 +- 1292.82 14 good chromium@454793,v8@60991f990b 2020.52 +- 1731.08 14 good chromium@454793,v8@bbeb6dc15d 2065.2 +- 1388.61 9 good chromium@454793,v8@a2a2c1b9ee 2023.7 +- 1745.36 14 good chromium@454793,v8@5a04f4fd68 2789.16 +- 55.2614 6 bad <-- chromium@454793,v8@2362f869a4 2778.28 +- 91.4297 9 bad chromium@454793,v8@59c9e6ff69 2730.44 +- 44.1495 6 bad chromium@454794 2699.38 +- 107.814 9 bad chromium@454799 2623.56 +- 957.689 9 bad chromium@454822 2722.12 +- 27.3463 6 bad chromium@454885 2711.56 +- 77.9655 6 bad To Run This Test src/tools/perf/run_benchmark -v --browser=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=http...ynet.co.il. page_cycler_v2.intl_ar_fa_he Debug Info https://chromeperf.appspot.com/buildbucket_job_status/8985656028472563696 Is this bisect wrong? https://chromeperf.appspot.com/bad_bisect?try_job_id=5836257290092544 | 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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Comment 1 by benhenry@google.com
, Mar 8 2017