All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=604428

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg6JC7pgoM


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

linux-release

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


===== SUSPECTED CL(s) =====
Subject : [BlobAsync] Faster shortcuttin, make renderer controller leaky & alive.
Author  : dmurph
Commit description:
  
This should fix strange memory access crashes observed in the
following bugs by doing the following things:
1. We make the controller a leaky lazy instance so it isn't destructed.
2. We make one less message loop hop before we call AddProcessRef, so
   hopefully our process won't be shutting down in the middle of a
   transfer.
3. We send the 'descriptions' as early as possible if we're below the
   IPC threshold, which should help some of the speed regressions.
4. We prevent sudden shutdowns (like tab bar closing) by using
   blink::Platform::current()->suddenTerminationChanged(false);

BUG=600462,600435, 599490 , 599416 , 375297 

Review URL: https://codereview.chromium.org/1853333003

Cr-Commit-Position: refs/heads/master@{#385472}
Commit  : 90774e39bb24b1c531e9b3aba16c77ab96675fb3
Date    : Wed Apr 06 16:21:48 2016


===== TESTED REVISIONS =====
Revision                Mean Value  Std. Dev.   Num Values  Good?
chromium@385470         0.015886    0.001575    5           good
chromium@385471         0.017017    0.00217     5           good
chromium@385472         0.067898    0.014615    5           bad         <-
chromium@385473         0.071215    0.007396    5           bad
chromium@385475         0.065496    0.009124    5           bad
chromium@385479         0.071718    0.008496    4           bad
chromium@385488         0.062941    0.010743    5           bad

Bisect job ran on: linux_perf_bisect
Bug ID: 604428

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --also-run-disabled-tests blob_storage.blob_storage
Test Metric: Action_CreateBlob-blob-writes/Action_CreateBlob-blob-writes
Relative Change: 296.22%
Score: 99.8

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/linux_perf_bisect/builds/6440
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9015021717509836368


Not what you expected? We'll investigate and get back to you!
  https://chromeperf.appspot.com/bad_bisect?try_job_id=604428

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