All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=763871

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=083ce18809b71b6e485574f0cd3874e5343f79cb777d06bee71c44c028fe3402


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

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8968752066624190480

=== Auto-CCing suspected CL author binji@chromium.org ===

Hi binji@chromium.org, the bisect results pointed to your CL, please take a look at the
results.


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

Suspected Commit
  Author : Ben Smith
  Commit : 181c03e9cc7f6b8e2391bfcf4e432556a05a9245
  Date   : Fri Sep 08 18:35:17 2017
  Subject: Add TSAN annotations for TypedArray accesses

Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : blink_perf.bindings
  Metric       : typed-array-set-from-typed/typed-array-set-from-typed
  Change       : 10.48% | 682.648183241 -> 611.073967438

Revision                           Result                  N
chromium@500688                    682.648 +- 5.4517       6      good
chromium@500736                    682.777 +- 11.7879      6      good
chromium@500737                    680.302 +- 18.2504      6      good
chromium@500737,v8@62649c8e7e      682.466 +- 8.22334      6      good
chromium@500737,v8@181c03e9cc      614.169 +- 9.00861      6      bad       <--
chromium@500737,v8@3ced15cb03      614.955 +- 19.8183      6      bad
chromium@500738                    613.981 +- 10.9458      6      bad
chromium@500739                    612.08 +- 13.9244       6      bad
chromium@500742                    613.925 +- 14.2885      6      bad
chromium@500748                    612.934 +- 7.86064      6      bad
chromium@500760                    612.231 +- 12.8816      6      bad
chromium@500783                    611.074 +- 9.51725      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.bindings

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8968752066624190480


For feedback, file a bug with component Speed>Bisection

This seems to be fixed by https://chromium.googlesource.com/v8/v8/+/695cc8fe9f634c3573eab6e0053472b900074566.

Thanks, binji, agreed the graphs all recovered, closing as fixed.