All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=750820

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=ecd8381d9315c0247809001fa9b9ee52bcbc0a0e8ebfbf814e1cf730694abd9b


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

linux-release

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8972524732378611904

=== BISECT JOB RESULTS ===
Perf regression found but unable to narrow commit range

Build failures prevented the bisect from narrowing the range further.


Bisect Details
  Configuration: linux_perf_bisect
  Benchmark    : page_cycler_v2.basic_oopif
  Metric       : timeToFirstContentfulPaint_avg/pcv1-warm/http___www.fifa.com_
  Change       : 33.17% | 69.9125 -> 92.8700000002

Suspected Commit Range
  6 commits in range
  https://chromium.googlesource.com/chromium/src/+log/8157e1e36fe2ea59a765c9bbcf931217c07d01d3..3b52cb6a2e29e9b1b9eb14d86535893f71edb43c


Revision             Result                  N
chromium@489655      69.9125 +- 1.84235      6        good
chromium@489748      72.4206 +- 6.87982      9        good
chromium@489794      73.8059 +- 14.9479      14       good
chromium@489817      72.9703 +- 12.0715      14       good
chromium@489818      ---                     ---      build failure
chromium@489819      ---                     ---      build failure
chromium@489820      ---                     ---      build failure
chromium@489821      ---                     ---      build failure
chromium@489822      ---                     ---      build failure
chromium@489823      73.7126 +- 11.8321      14       bad
chromium@489829      87.049 +- 44.3634       6        bad
chromium@489840      92.87 +- 69.3719        9        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=http...www.fifa.com. page_cycler_v2.basic_oopif

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8972524732378611904


For feedback, file a bug with component Speed>Bisection

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8970614590536693488

Kicked off another bisect; looks like the first one misidentified the range. The test is pretty noisy, so we might want to WontFix if it doesn't succeed.

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

Suspected Commit
  Author : Charles Harrison
  Commit : 7847afc23c816960a019476e995c696143365cac
  Date   : Thu Jul 27 01:15:34 2017
  Subject: Remove the DocumentWriteEvaluator

Bisect Details
  Configuration: linux_perf_bisect
  Benchmark    : page_cycler_v2.basic_oopif
  Metric       : timeToFirstContentfulPaint_avg/pcv1-warm/http___www.fifa.com_
  Change       : 27.52% | 72.2558333278 -> 92.1411666671

Revision             Result                  N
chromium@489655      72.2558 +- 3.53179      6       good
chromium@489748      70.8625 +- 2.35058      6       good
chromium@489794      72.13 +- 2.93571        6       good
chromium@489817      71.6173 +- 5.07067      6       good
chromium@489823      74.4867 +- 10.7765      9       good
chromium@489824      73.1858 +- 11.4837      14      good
chromium@489825      95.1921 +- 76.0465      9       bad       <--
chromium@489826      88.8751 +- 64.2891      9       bad
chromium@489829      100.547 +- 80.2999      9       bad
chromium@489840      92.1412 +- 55.2743      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=http...www.fifa.com. page_cycler_v2.basic_oopif

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8970614590536693488


For feedback, file a bug with component Speed>Bisection