All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=739117

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnoqf_AkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnrC-jAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnv6Y8gkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnv6Y8goM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnp7Q5QkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnoiemAgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgntf7vwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7pnzhggM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnoeG-wgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnr2c1QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgns6DtQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgntWcsgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7sPYsAgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnvWsrAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3oC7vAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnsekoQsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgntSOggsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnqjO_wkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnr2ctQgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnsn5twsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnsn5twkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnpa4kAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7q2omQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg7ubejAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnuzRgQsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnvzaswkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3o6YyQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3rj9qQkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3rj9qQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnqfsvAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnqfsvAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnuqJ4goM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnpPKpwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDgnpXX_AoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg3qjjowsM


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

chromium-rel-mac-retina
chromium-rel-mac11
chromium-rel-mac11-air
chromium-rel-mac11-pro
chromium-rel-mac12
chromium-rel-mac12-mini-8gb
chromium-rel-win7-dual
chromium-rel-win7-gpu-ati
chromium-rel-win7-gpu-intel
chromium-rel-win7-gpu-nvidia
chromium-rel-win7-x64-dual
chromium-rel-win8-dual
win-high-dpi

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8975009467035489936

=== BISECT JOB RESULTS ===
Bisect was unable to run to completion

Error: INFRA_FAILURE

The bisect was able to narrow the range, you can try running with:
  good_revision: b80af55bbd0fc71afbdbfdaa95160e8947bf4b0e
  bad_revision : 8d097cf30a2dee37de4586de97f06269ed03da09

If failures persist contact the team (see below) and report the error.


Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : v8.infinite_scroll_tbmv2
  Metric       : v8-gc-scavenger_avg/tumblr

Revision             Result                   N
chromium@483667      1.23767 +- 0.157042      6      good
chromium@483702      1.16095 +- 0.197879      6      good
chromium@483719      1.20589 +- 0.145937      6      good
chromium@483728      1.18931 +- 0.178747      6      good
chromium@483732      1.64485 +- 0.139507      6      bad
chromium@483736      1.79364 +- 0.303095      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=tumblr v8.infinite_scroll_tbmv2

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8975009467035489936


For feedback, file a bug with component Speed>Bisection

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8974995922871340080

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : Ulan Degenbaev
  Commit : f341bb0f623821e56349735e47e1a9094f65d9a3
  Date   : Fri Jun 30 12:03:04 2017
  Subject: Revert "[heap] Allow a minimum semi-space size of 512K."

Bisect Details
  Configuration: mac_10_12_perf_bisect
  Benchmark    : v8.infinite_scroll_tbmv2
  Metric       : v8-gc-scavenger_avg/tumblr
  Change       : 57.93% | 1.07214055407 -> 1.69323574842

Revision                           Result                    N
chromium@483667                    1.07214 +- 0.265457       6      good
chromium@483702                    1.26066 +- 0.0909087      6      good
chromium@483719                    1.17594 +- 0.249296       6      good
chromium@483728                    1.17525 +- 0.188929       6      good
chromium@483729                    1.11587 +- 0.0686204      6      good
chromium@483729,v8@ca93156294      1.15715 +- 0.157973       6      good
chromium@483729,v8@f341bb0f62      1.67502 +- 0.287696       6      bad       <--
chromium@483729,v8@fa4314da8b      1.72877 +- 0.296978       6      bad
chromium@483729,v8@bfbabce113      1.73746 +- 0.385182       6      bad
chromium@483730                    1.78695 +- 0.33252        6      bad
chromium@483732                    1.76236 +- 0.242713       6      bad
chromium@483736                    1.69324 +- 0.317647       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=tumblr v8.infinite_scroll_tbmv2

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8974995922871340080


For feedback, file a bug with component Speed>Bisection