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40% regression cc:effective_size in v8.browsing_desktop |
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Issue descriptionRegressed metric is memory:chrome:renderer_processes:reported_by_chrome:cc:effective_size_avg / browse_media / browse_media_imgur Chromium Commit Position range: 421335 - 421399 Graph: https://chromeperf.appspot.com/report?sid=791ccf5d40700924230201e56e137a006597d5292f8f5555035195569ba8b021&start_rev=417593&end_rev=423395&rev=421786
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Oct 7 2016
===== BISECT JOB RESULTS ===== Status: completed ===== SUSPECTED CL(s) ===== Subject : cc: Use medium filter quality for downscales. Author : vmpstr Commit description: This patch makes us use a medium filter quality if one of the dimensions of an image is being downscaled. There are a couple of things to watch out for: 1. This may cause worse quality on some images 2. This may regress memory, since mips are larger cache objects than specific smallest size. R=chrishtr@chromium.org, enne@chromium.org BUG= 649046 CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel Review-Url: https://codereview.chromium.org/2361243002 Cr-Commit-Position: refs/heads/master@{#421375} Commit : 7a49649a96774df16e8f1401137e557e6877a4a1 Date : Tue Sep 27 23:05:26 2016 ===== TESTED REVISIONS ===== Revision Mean Std Dev N Good? chromium@421334 151533979 35294156 5 good chromium@421367 170588441 34633850 8 good chromium@421371 161997992 35166120 12 good chromium@421373 185491283 36692593 12 good chromium@421374 178647008 33034916 12 good chromium@421375 231877243 52869432 8 bad <-- chromium@421383 267960511 48331356 5 bad chromium@421399 267227480 48719663 5 bad Bisect job ran on: linux_perf_bisect Bug ID: 653544 Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests v8.browsing_desktop Test Metric: memory:chrome:renderer_processes:reported_by_chrome:cc:effective_size_avg/browse_media/browse_media_imgur Relative Change: 76.35% Score: 90.0 Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/linux_perf_bisect/builds/6752 Job details: https://chromeperf.appspot.com/buildbucket_job_status/8999542861919064736 Not what you expected? We'll investigate and get back to you! https://chromeperf.appspot.com/bad_bisect?try_job_id=5259751816953856 | 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 Tests>AutoBisect. Thank you! |
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Comment 1 by 42576172...@developer.gserviceaccount.com
, Oct 6 2016