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4.5% regression in page_cycler_v2.typical_25 at 454740:454985 |
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Issue descriptionSee the link to graphs below.
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Mar 9 2017
Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8985559254159841792
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Mar 10 2017
=== BISECT JOB RESULTS === Perf regression found with culprit Suspected Commit Author : csharrison Commit : 279edadbd6962b7afa97c166896ae69ceb797da4 Date : Mon Mar 06 17:05:49 2017 Subject: Turn off LazyParseCSS on trybots for now Bisect Details Configuration: mac_10_11_perf_bisect Benchmark : page_cycler_v2.typical_25 Metric : timeToFirstContentfulPaint_avg/pcv1-warm/http___www.imdb.com_title_tt0910970_ Change : 4.43% | 77.4588333368 -> 80.8886666795 Revision Result N chromium@454739 77.4588 +- 1.25549 6 good chromium@454854 77.986 +- 2.71815 6 good chromium@454871 78.001 +- 1.42911 6 good chromium@454875 77.635 +- 0.845626 6 good chromium@454877 77.7193 +- 1.39344 6 good chromium@454878 78.2925 +- 1.66272 6 good chromium@454879 80.394 +- 1.72513 6 bad <-- chromium@454887 80.726 +- 1.71587 6 bad chromium@454920 81.006 +- 3.12544 6 bad chromium@454985 80.8887 +- 2.6607 6 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=http...www.imdb.com.title.tt0910970. page_cycler_v2.typical_25 Debug Info https://chromeperf.appspot.com/buildbucket_job_status/8985559254159841792 Is this bisect wrong? https://chromeperf.appspot.com/bad_bisect?try_job_id=5880504580046848 | 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 9 2017