All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=592283

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDAv-v2uAoM


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

chromium-rel-mac-retina

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


===== SUSPECTED CL(s) =====
Subject : Revert of [DevTools] Postpone more agents instantiation until attached. (patchset #1 id:1 of https://codereview.chromium.org/1746393003/ )
Author  : dgozman
Commit description:
  
Reason for revert:
Speculative revert to fix performance regressions: https://bugs.chromium.org/p/chromium/issues/detail?id=591406

Original issue's description:
> [DevTools] Postpone more agents instantiation until attached.
>
> To support multiple attached devtools, we have to instantiate
> individual agents on demand, rather than on creation.
> This patch moves most of agents, with only worker and inspector to go.
>
> BUG= 590878 
>
> Committed: https://crrev.com/b547858514737d59af3c55b2b06b4e511624c304
> Cr-Commit-Position: refs/heads/master@{#378509}

TBR=pfeldman@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG= 590878 

Review URL: https://codereview.chromium.org/1761663003

Cr-Commit-Position: refs/heads/master@{#379111}
Commit  : 924fe8af695e29594c55db971d793d4d931b337c
Date    : Thu Mar 03 22:19:29 2016


===== TESTED REVISIONS =====
Revision                Mean Value  Std. Dev.   Num Values  Good?
chromium@379012         37.459026   1.218245    5           good
chromium@379060         36.980691   0.799051    5           good
chromium@379087         37.489281   2.490524    5           good
chromium@379103         36.758687   1.815186    5           good
chromium@379107         38.226778   1.691946    5           good
chromium@379109         36.390067   1.864814    5           good
chromium@379110         36.610822   2.279288    5           good
chromium@379111         31.796885   1.397353    5           bad
chromium@379118         31.306471   1.249331    5           bad

Bisect job ran on: mac_retina_perf_bisect
Bug ID: 592283

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --also-run-disabled-tests v8.top_25_smooth
Test Metric: v8_gc_total_percentage_idle/v8_gc_total_percentage_idle
Relative Change: 16.42%
Score: 99.5

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_retina_perf_bisect/builds/1197
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9018879908516940256


| 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 label Cr-Tests-AutoBisect.  Thank you!

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


===== SUSPECTED CL(s) =====
Subject : Revert of [DevTools] Postpone more agents instantiation until attached. (patchset #1 id:1 of https://codereview.chromium.org/1746393003/ )
Author  : dgozman
Commit description:
  
Reason for revert:
Speculative revert to fix performance regressions: https://bugs.chromium.org/p/chromium/issues/detail?id=591406

Original issue's description:
> [DevTools] Postpone more agents instantiation until attached.
>
> To support multiple attached devtools, we have to instantiate
> individual agents on demand, rather than on creation.
> This patch moves most of agents, with only worker and inspector to go.
>
> BUG= 590878 
>
> Committed: https://crrev.com/b547858514737d59af3c55b2b06b4e511624c304
> Cr-Commit-Position: refs/heads/master@{#378509}

TBR=pfeldman@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG= 590878 

Review URL: https://codereview.chromium.org/1761663003

Cr-Commit-Position: refs/heads/master@{#379111}
Commit  : 924fe8af695e29594c55db971d793d4d931b337c
Date    : Thu Mar 03 22:19:29 2016


===== TESTED REVISIONS =====
Revision                Mean Value  Std. Dev.   Num Values  Good?
chromium@379087         37.116862   1.553388    5           good
chromium@379103         36.703158   1.245173    8           good
chromium@379107         36.563088   1.662958    8           good
chromium@379109         36.641576   3.344314    8           good
chromium@379110         36.10858    1.639243    8           good
chromium@379111         31.202511   2.861802    5           bad
chromium@379118         31.728199   1.282346    5           bad

Bisect job ran on: mac_retina_perf_bisect
Bug ID: 592283

Test Command: src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --also-run-disabled-tests v8.top_25_smooth
Test Metric: v8_gc_total_percentage_idle/v8_gc_total_percentage_idle
Relative Change: 14.52%
Score: 98.0

Buildbot stdio: http://build.chromium.org/p/tryserver.chromium.perf/builders/mac_retina_perf_bisect/builds/1196
Job details: https://chromeperf.appspot.com/buildbucket_job_status/9018879945431230464


| 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 label Cr-Tests-AutoBisect.  Thank you!