All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=756007

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=13f3e54507ff4e23422a678abf1875369ab92e5a0c08191f79d79d3a900f0264


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
win-high-dpi

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8971091778874954048

=== 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: winx64intel_perf_bisect
  Benchmark    : page_cycler_v2_site_isolation.basic_oopif
  Metric       : timeToFirstContentfulPaint_avg/pcv1-warm/http___booking.com
  Change       : 2729.37% | 91.2253333231 -> 2581.10566665

Revision                                 Result                  N
chromium@494037                          91.2253 +- 5.81094      6      good
chromium@494044                          91.8992 +- 1.95032      6      good
chromium@494046                          94.3507 +- 7.47031      6      good
chromium@494046,catapult@122dd5e91b      2299.78 +- 436.734      6      bad       <--
chromium@494047                          2283.45 +- 621.656      6      bad
chromium@494050                          2418.43 +- 458.159      6      bad
chromium@494063                          2260.68 +- 502.704      6      bad
chromium@494089                          2581.11 +- 610.363      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=http...booking.com page_cycler_v2_site_isolation.basic_oopif

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8971091778874954048


For feedback, file a bug with component Speed>Bisection