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8.9%-13.2% regression in v8.runtimestats.browsing_mobile_classic at 459378:459597 |
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Issue descriptionSee the link to graphs below.
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Mar 27 2017
Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8983967233984150944
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Mar 28 2017
=== Auto-CCing suspected CL author verwaest@chromium.org === Hi verwaest@chromium.org, the bisect results pointed to your CL, please take a look at the results. === BISECT JOB RESULTS === Perf regression found with culprit Suspected Commit Author : Toon Verwaest Commit : 810e8593003c33c058cee7ad0fcd42c788cb5597 Date : Fri Mar 24 10:40:49 2017 Subject: [ic] Make sure we don't use a smi-handler for FunctionTemplate getters Bisect Details Configuration: android_nexus7_perf_bisect Benchmark : v8.runtimestats.browsing_mobile Metric : V8 C++:duration_avg/browse_news/browse_news_qq Change : 13.44% | 1161.9945 -> 1318.12233333 Revision Result N chromium@459484 1161.99 +- 39.4728 6 good chromium@459487 1151.44 +- 94.8465 6 good chromium@459488 1182.59 +- 59.6184 6 good chromium@459488,v8@c152d45950 1144.81 +- 110.728 6 good chromium@459488,v8@b7ac3668ea 1162.14 +- 108.405 9 good chromium@459488,v8@810e859300 1274.42 +- 113.869 6 bad <-- chromium@459488,v8@69e02958d3 1323.69 +- 69.5669 6 bad chromium@459488,v8@f12b193df9 1317.57 +- 114.265 6 bad chromium@459489 1303.58 +- 55.9867 6 bad chromium@459490 1314.78 +- 124.63 6 bad chromium@459496 1316.26 +- 98.3614 6 bad chromium@459507 1271.14 +- 62.8257 6 bad chromium@459529 1316.16 +- 45.4293 6 bad chromium@459573 1318.12 +- 55.8125 6 bad To Run This Test src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=browse.news.qq v8.runtimestats.browsing_mobile Debug Info https://chromeperf.appspot.com/buildbucket_job_status/8983967233984150944 Is this bisect wrong? https://chromeperf.appspot.com/bad_bisect?try_job_id=6196242306039808 | 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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Mar 28 2017
The indicated CL was a perf regression fix itself. Over time we'll make everything data driven so we may restore this later. |
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Comment 1 by tebbi@chromium.org
, Mar 27 2017