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2.4%-2.8% regression in media.tough_video_cases at 464040:464153 |
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Issue descriptionSee the link to graphs below.
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Apr 21 2017
Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8981745089526116272
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Apr 21 2017
=== BISECT JOB RESULTS === NO Perf regression found Bisect Details Configuration: winx64intel_perf_bisect Benchmark : media.tough_video_cases Metric : vm_working_set_delta_size/crowd2160.mp4_gpu Revision Result N chromium@464039 6801.71 +- 37637.9 21 good chromium@464153 -397.714 +- 48743.1 21 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/8981745089526116272 Is this bisect wrong? https://chromeperf.appspot.com/bad_bisect?try_job_id=5791609926451200 | 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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Apr 21 2017
Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8981720540606840128
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Apr 21 2017
=== Auto-CCing suspected CL author yzshen@chromium.org === Hi yzshen@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 : yzshen Commit : ee80d405f8ea5038f89c41c0603f1538ceeb7f14 Date : Wed Apr 12 19:51:47 2017 Subject: Network service: add URLLoaderFactory implementation. Bisect Details Configuration: winx64intel_perf_bisect Benchmark : media.tough_video_cases Metric : vm_working_set_delta_size/crowd2160.mp4_gpu Change : 2.38% | 22812.0 -> 23354.6666667 Revision Result N chromium@464039 22812.0 +- 228.666 6 good chromium@464096 22808.0 +- 279.027 6 good chromium@464111 22785.3 +- 117.394 6 good chromium@464115 22838.0 +- 349.937 6 good chromium@464116 22908.7 +- 238.087 6 good chromium@464117 23294.7 +- 297.438 6 bad <-- chromium@464118 23264.7 +- 65.8281 6 bad chromium@464125 23300.0 +- 202.148 6 bad chromium@464153 23354.7 +- 122.202 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/8981720540606840128 Is this bisect wrong? https://chromeperf.appspot.com/bad_bisect?try_job_id=5791609926451200 | 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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Apr 21 2017
I am pretty sure that the CL is irrelevant. That CL implements something that doesn't take effect unless --enable-network-service is specified. The implementation doesn't touch any code outside of the behind-flag feature. And currently nothing on the bots enables this flag. Would you please find a better owner for this bug? Thanks! (But please let me know if you have reasons how my CL could be involved.)
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Apr 21 2017
Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8981668408200185632
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Apr 22 2017
=== BISECT JOB RESULTS === Perf regression found with culprit Suspected Commit Author : yzshen Commit : ee80d405f8ea5038f89c41c0603f1538ceeb7f14 Date : Wed Apr 12 19:51:47 2017 Subject: Network service: add URLLoaderFactory implementation. Bisect Details Configuration: winx64intel_perf_bisect Benchmark : media.tough_video_cases Metric : vm_working_set_delta_size/smpte_3840x2160_60fps_vp9.webm_gpu Change : 2.32% | 22745.3333333 -> 23273.3333333 Revision Result N chromium@464111 22745.3 +- 201.09 6 good chromium@464115 22764.7 +- 215.66 6 good chromium@464116 22872.0 +- 230.755 6 good chromium@464117 23271.3 +- 144.601 6 bad <-- chromium@464118 23339.3 +- 250.466 6 bad chromium@464125 23273.3 +- 211.484 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/8981668408200185632 Is this bisect wrong? https://chromeperf.appspot.com/bad_bisect?try_job_id=5860406846816256 | 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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Apr 25 2017
Unable to find the CL causing the regression, and the regression is minor. Ignoring it. |
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Comment 1 by zhanliang@google.com
, Apr 21 2017