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23.2%-42.2% regression in blink_perf.layout at 472411:472426 |
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Issue descriptionSee the link to graphs below.
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May 18 2017
Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8979252316367416768
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May 19 2017
=== BISECT JOB RESULTS === Bisect failed for unknown reasons Please contact the team (see below) and report the error. Bisect Details Configuration: android_webview_nexus6_aosp_perf_bisect Benchmark : blink_perf.layout Metric : character_fallback/character_fallback 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 blink_perf.layout Debug Info https://chromeperf.appspot.com/buildbucket_job_status/8979252316367416768 Is this bisect wrong? https://chromeperf.appspot.com/bad_bisect?try_job_id=5777885073244160 | 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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May 19 2017
Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8979174896440313664
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May 21 2017
=== BISECT JOB RESULTS === Perf regression found with culprit Suspected Commit Author : drott Commit : fbec38011870753cffb3cb2ff98aa0c00c63b25c Date : Wed May 17 10:49:03 2017 Subject: Reland: Compile FreeType with HarfBuzz support Bisect Details Configuration: android_webview_nexus6_aosp_perf_bisect Benchmark : blink_perf.layout Metric : character_fallback/character_fallback Change : 22.62% | 347.920666667 -> 426.6315 Revision Result N chromium@472410 347.921 +- 6.70487 6 good chromium@472412 347.641 +- 12.5063 6 good chromium@472413 430.503 +- 27.1021 6 bad <-- chromium@472414 423.16 +- 21.3918 6 bad chromium@472418 425.617 +- 29.2551 6 bad chromium@472426 426.631 +- 28.5207 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 blink_perf.layout Debug Info https://chromeperf.appspot.com/buildbucket_job_status/8979174896440313664 Is this bisect wrong? https://chromeperf.appspot.com/bad_bisect?try_job_id=5777885073244160 | 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 tdres...@chromium.org
, May 18 2017