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2.1%-14.2% regression in media_perftests at 476915:476958 |
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Issue descriptionThese regressions all appear to be a retrun to a previous average from ~100 revisions prior. Likely some change landed and reverted. Bisects just to be sure.
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Jun 6 2017
Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8977508185636714496
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Jun 7 2017
=== BISECT JOB RESULTS === Perf regression found with culprit Suspected Commit Author : hans Commit : ba2ff9ad0d643a443575c839e56ae9edf7106643 Date : Mon Jun 05 02:02:06 2017 Subject: Revert of "win: Set is_clang=true by default over the weekend." Bisect Details Configuration: winx64_10_perf_bisect Benchmark : media.tough_video_cases Metric : vm_working_set_delta_size/tulip2.mp4_gpu Change : 2.02% | 23586.6666667 -> 24062.6666667 Revision Result N chromium@476917 23586.7 +- 119.956 6 good chromium@476920 23528.0 +- 53.3667 6 good chromium@476921 23970.0 +- 59.7997 6 bad <-- chromium@476922 23985.3 +- 77.08 6 bad chromium@476923 24049.3 +- 97.1048 6 bad chromium@476928 24014.0 +- 138.42 6 bad chromium@476938 23964.7 +- 99.3445 6 bad chromium@476958 24062.7 +- 157.852 6 bad To Run This Test src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests media.tough_video_cases Debug Info https://chromeperf.appspot.com/buildbucket_job_status/8977508185636714496 Is this bisect wrong? https://chromeperf.appspot.com/bad_bisect?try_job_id=6142999597154304 | 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 chcunningham@chromium.org
, Jun 6 2017