All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=758227

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=2bcbd326c28a93896bcbb224ac5eef8cfe3ba615bf1ef230026186cc1d13fd5d


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

chromium-rel-mac-retina

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970456411761814608

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

Suspected Commit
  Author : Dominic Mazzoni
  Commit : 91ce4a5c047cf0a01f7d23c839bd4364428fa6ad
  Date   : Thu Aug 17 04:47:27 2017
  Subject: Add use counters for all ARIA attributes.

Bisect Details
  Configuration: mac_retina_perf_bisect
  Benchmark    : blink_perf.dom
  Metric       : modify-element-title/modify-element-title
  Change       : 9.55% | 90.816 -> 99.4875

Revision             Result                  N
chromium@494990      90.816 +- 1.99783       6      good
chromium@495058      91.6467 +- 2.00537      6      good
chromium@495075      85.9688 +- 1.69131      6      good
chromium@495076      98.547 +- 1.85496       6      bad       <--
chromium@495077      99.357 +- 2.95676       6      bad
chromium@495078      102.8 +- 3.23706        6      bad
chromium@495080      102.517 +- 19.7228      6      bad
chromium@495084      99.1472 +- 3.26321      6      bad
chromium@495092      99.4718 +- 3.02354      6      bad
chromium@495126      99.7077 +- 2.98358      6      bad
chromium@495262      99.4875 +- 3.34846      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 blink_perf.dom

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970456411761814608


For feedback, file a bug with component Speed>Bisection