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14.8%-69.4% regression in thread_times.key_mobile_sites_smooth at 490644:490675 |
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Issue descriptionSee the link to graphs below.
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Aug 1 2017
Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8972445469687354864
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Aug 1 2017
=== Auto-CCing suspected CL author mtklein@chromium.org === Hi mtklein@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 : Mike Klein Commit : 5f9b59b52db2b9a11d41bb7fa93ec5e5d6104236 Date : Sat Jul 29 12:28:32 2017 Subject: use new Stage ABI for ARMv7 too Bisect Details Configuration: android_webview_nexus6_aosp_perf_bisect Benchmark : thread_times.key_mobile_sites_smooth Metric : thread_other_cpu_time_per_frame/http___cuteoverload.com Change : 46.99% | 2.02102234499 -> 2.97074527227 Revision Result N chromium@490643 2.02102 +- 0.539188 6 good chromium@490655 1.70516 +- 1.50347 6 good chromium@490658 1.71845 +- 0.70621 6 good chromium@490660 1.78335 +- 0.558717 6 good chromium@490660,skia@5f9b59b52d 3.28538 +- 1.03334 6 bad <-- chromium@490661 2.91095 +- 0.332054 6 bad chromium@490667 2.97075 +- 0.522368 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 --story-filter=http...cuteoverload.com thread_times.key_mobile_sites_smooth More information on addressing performance regressions: http://g.co/ChromePerformanceRegressions Debug information about this bisect: https://chromeperf.appspot.com/buildbucket_job_status/8972445469687354864 For feedback, file a bug with component Speed>Bisection
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Aug 2 2017
This is not the same CL but part of the same ongoing effort mentioned at 747873. Like in that bug, this is limited to cuteoverload, and it even looks like the CL in question here actually fixed many of the regressions there in 747873. The regressions here are still to levels better than where we were less than a month ago. |
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Comment 1 by 42576172...@developer.gserviceaccount.com
, Aug 1 2017