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Issue metadata

Status: Duplicate
Owner: ----
Closed: Nov 2016
Cc:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug-Regression



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5.3% regression in thread_times.key_idle_power_cases at 433403:433448

Project Member Reported by nzolghadr@chromium.org, Nov 23 2016

Issue description

See the link to graphs below.
 
All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=668187

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgm9D8ogkM


Bot(s) for this bug's original alert(s):

android-nexus6
Project Member

Comment 3 by 42576172...@developer.gserviceaccount.com, Nov 23 2016

Mergedinto: 667258
Status: Duplicate (was: Untriaged)

===== BISECT JOB RESULTS =====
Status: completed


===== SUSPECTED CL(s) =====
Subject : Pass correct texture hint for GPU raster
Author  : ericrk
Commit description:
  
Currently, ResourcePool creates all resources with
ResourceProvider::TEXTURE_HINT_IMMUTABLE. This is fine for SW raster,
however we should be using TEXTURE_HINT_IMMUTABLE_FRAMEBUFFER for GPU
raster. Using the correct flag passes additional information to ANGLE
via a GL extension and causes us to skip an unnecessary texture copy.

R=vmpstr
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel

Review-Url: https://codereview.chromium.org/2507963003
Cr-Commit-Position: refs/heads/master@{#433437}
Commit  : da59d418f54604ba2451cd0ef3a9cd42c05ca530
Date    : Sun Nov 20 00:45:40 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N  Good?
chromium@433402  964.737  7.10658  8  good
chromium@433425  963.313  6.8548   8  good
chromium@433431  961.854  21.2003  8  good
chromium@433434  965.263  12.6696  8  good
chromium@433436  965.323  11.3542  8  good
chromium@433437  1013.78  10.9597  5  bad    <--
chromium@433448  1012.78  8.36865  5  bad

Bisect job ran on: android_nexus6_perf_bisect
Bug ID: 668187

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=animated.gif.html thread_times.key_idle_power_cases
Test Metric: tasks_per_second_total_all/animated-gif.html
Relative Change: 4.98%

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_nexus6_perf_bisect/builds/2774
Job details: https://chromeperf.appspot.com/buildbucket_job_status/8995186094175412976


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=6444522383343616

| 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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