All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=756041

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=63dd2d7d56dab0a74dce11920678fcab451ef7ab12a0dd629184e79c1a4b543d


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

chromium-rel-mac12
chromium-rel-win10
chromium-rel-win7-gpu-intel
chromium-rel-win7-gpu-nvidia

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971086360557787760

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

Suspected Commit
  Author : perezju
  Commit : 122dd5e91bf64888049459ce73a8fd34c084cfe0
  Date   : Mon Aug 14 12:28:51 2017
  Subject: [Telemetry] Reuse shared state between story runs

Bisect Details
  Configuration: winx64nvidia_perf_bisect
  Benchmark    : loading.desktop
  Metric       : timeToFirstContentfulPaint_avg/pcv1-warm/FlipKart
  Change       : 4308.05% | 47.4696666698 -> 2092.48783335

Revision                                 Result                  N
chromium@494036                          47.4697 +- 3.28358      6      good
chromium@494043                          47.1477 +- 7.94345      6      good
chromium@494046                          46.2173 +- 4.72913      6      good
chromium@494046,catapult@122dd5e91b      2159.01 +- 159.75       6      bad       <--
chromium@494047                          2108.11 +- 257.154      6      bad
chromium@494048                          2146.13 +- 324.421      6      bad
chromium@494049                          2148.93 +- 272.866      6      bad
chromium@494062                          2126.47 +- 258.315      6      bad
chromium@494087                          2092.49 +- 254.995      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release_x64 --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=FlipKart loading.desktop

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8971086360557787760


For feedback, file a bug with component Speed>Bisection