All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=635468

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg1o7CtgoM


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

android-galaxy-s5

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9004901738753350288

===== BISECT JOB RESULTS =====
Status: failed


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N  Good?
chromium@410130  42380.0  91.6079  5  good
chromium@410166  42452.8  43.3959  5  good
chromium@410184  42352.8  84.019   5  good
chromium@410189  42460.0  75.7364  5  good
chromium@410190  43148.8  69.708   5  bad
chromium@410191  43141.6  133.435  5  bad
chromium@410193  43127.2  96.8876  5  bad
chromium@410202  43179.2  97.0526  5  bad

Bisect job ran on: android_s5_perf_bisect
Bug ID: 635468

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests webrtc.peerconnection
Test Metric: vm_private_dirty_final_renderer/vm_private_dirty_final_renderer
Relative Change: 1.89%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_s5_perf_bisect/builds/898
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9004901738753350288


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5884053299920896

| 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!

wkorman: Looks like 'Raster display item lists via a visual rect RTree' made some performance improvements to this test, and its revert regressed them. Not sure if there's anything we can do here?

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9004881243364810640

===== BISECT JOB RESULTS =====
Status: failed


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N  Good?
chromium@410130  42380.0  91.6079  5  good
chromium@410166  42452.8  43.3959  5  good
chromium@410184  42352.8  84.019   5  good
chromium@410189  42460.0  75.7364  5  good
chromium@410190  43148.8  69.708   5  bad
chromium@410191  43141.6  133.435  5  bad
chromium@410193  43127.2  96.8876  5  bad
chromium@410202  43179.2  97.0526  5  bad

Bisect job ran on: android_s5_perf_bisect
Bug ID: 635468

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests webrtc.peerconnection
Test Metric: vm_private_dirty_final_renderer/vm_private_dirty_final_renderer
Relative Change: 1.89%
Score: 0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_s5_perf_bisect/builds/898
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9004901738753350288


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5884053299920896

| 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!

We will be re-landing the cc r-tree patch soon. It is a priority to get it into M54. See bugs blocking  http://crbug.com/529938  for the work to be resolved in some manner before re-land. I will mark this bug as blocked on  http://crbug.com/529938 .

That said it's surprising that webrtc would benefit from a raster/paint change, though it is a notable shift in raster approach. Maybe due to altering the profile of cpu utilization?

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9004789828150680768

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


===== SUSPECTED CL(s) =====
Subject : Revert "Raster display item lists via a visual rect RTree."
Author  : wkorman
Commit description:
  
Meta-revert for http://crrev.com/1484163002 due to bugs found in ui/views and
DevTools.

Original change description:

    Raster display item lists via a visual rect RTree.

    Rather than caching and playing back an entire SkPicture
    when rastering a display item list for a particular
    playback rect, instead retain display items and query
    them via an RTree of their visual rects to find and
    raster only what's needed.

    Display item lists no longer support the notion of a
    bounding "layer rect" with mutable origin.

    DisplayItemListSettings proto is obsolete after this
    change as it's comprised solely of one field to allow
    switching whether to use the aforementioned now-deleted
    cached SkPicture code path. It will be deleted in a
    subsequent patch.

Revert "Raster display item lists via a visual rect RTree."

This reverts commit ccb9e13712b1632b889960d1d85d556c0139fd51.

Revert "Don't clear visual rects when finalizing display item lists for now."

This reverts commit 1adf72a0a0a3e04151cc740d15ab19655b1e7e5e.

Revert "Delete obsolete DisplayItemList::ProcessAppendedItem method definition."

This reverts commit f652746f56c59523b0440cf18b769f8ba779d15d.

BUG= 529938 , 633750 , 633869 , 634239 , 634823 , 634959 
TBR=chrishtr@chromium.org,vmpstr@chromium.org,lushnikov@chromium.org
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel

Review-Url: https://codereview.chromium.org/2217263003
Cr-Commit-Position: refs/heads/master@{#410190}
Commit  : 490867260447e9360b52d5c03417b000490332e0
Date    : Fri Aug 05 22:27:03 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N  Good?
chromium@410130  42448.0  74.027   5  good
chromium@410166  42413.6  47.1254  5  good
chromium@410184  42400.0  80.9444  5  good
chromium@410189  42400.8  75.0147  5  good
chromium@410190  43158.4  60.8342  5  bad    <--
chromium@410191  43164.8  144.51   5  bad
chromium@410193  43086.4  91.0648  5  bad
chromium@410202  43196.8  156.548  5  bad

Bisect job ran on: android_s5_perf_bisect
Bug ID: 635468

Test Command: src/tools/perf/run_benchmark -v --browser=android-chromium --output-format=chartjson --upload-results --also-run-disabled-tests webrtc.peerconnection
Test Metric: vm_private_dirty_final_renderer/vm_private_dirty_final_renderer
Relative Change: 1.76%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/android_s5_perf_bisect/builds/903
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9004901738753350288


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5884053299920896

| 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!