All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=634398

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg5uqxpwkM


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

chromium-rel-mac-hdd

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9005236671668326768

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9005231699723188848

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/9005140510439751456

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


===== SUSPECTED CL(s) =====
Subject : Raster display item lists via a visual rect RTree.
Author  : wkorman
Commit description:
  
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DisplayItemListSettings proto is obsolete after this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.

BUG= 529938 
TBR=sadrul
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel

Review-Url: https://codereview.chromium.org/1484163002
Cr-Commit-Position: refs/heads/master@{#409291}
Commit  : ccb9e13712b1632b889960d1d85d556c0139fd51
Date    : Tue Aug 02 20:08:52 2016


===== TESTED REVISIONS =====
Revision         Mean     Std Dev  N  Good?
chromium@409254  3369880  0.0      5  good
chromium@409275  3369880  0.0      5  good
chromium@409286  3369880  0.0      5  good
chromium@409289  3369880  0.0      5  good
chromium@409290  3369880  0.0      5  good
chromium@409291  7039896  0.0      5  bad    <--
chromium@409296  7039896  0.0      5  bad
chromium@409337  7039896  0.0      5  bad

Bisect job ran on: mac_hdd_perf_bisect
Bug ID: 634398

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --also-run-disabled-tests system_health.memory_desktop
Test Metric: load_games-memory:chrome:all_processes:reported_by_chrome:cc:effective_size_avg/load_games_spychase
Relative Change: 108.91%
Score: 99.9

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_hdd_perf_bisect/builds/707
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9005231699723188848


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=5825571179724800

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