All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=766574

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=06d93b8059ecb1b3539d887cb0a78cf7d50107b215190237cf33327359e579fd


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

android-webview-nexus5X
android-webview-nexus6
chromium-rel-mac-retina
chromium-rel-mac11-pro
chromium-rel-win7-gpu-ati
chromium-rel-win7-gpu-intel
chromium-rel-win8-dual

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8968030449078394112

=== BISECT JOB RESULTS ===
Bisect failed unexpectedly

Bisect was aborted with the following:
  Step('Bisecting revision.Post bisect results (11)') failed with return_code 1


Bisect Details
  Configuration: win_8_perf_bisect
  Benchmark    : octane
  Metric       : Total/Score

Revision                           Result                  N
chromium@502391                    28063.7 +- 1454.51      9       good
chromium@502436                    28359.2 +- 1597.88      9       good
chromium@502458                    28129.3 +- 921.082      6       good
chromium@502470                    28118.1 +- 1676.88      14      good
chromium@502470,v8@70372dfc64      28543.0 +- 578.674      6       good
chromium@502470,v8@a10e4a179e      28515.0 +- 438.785      6       good
chromium@502470,v8@c87f8954cc      27480.3 +- 533.447      6       bad
chromium@502471                    27246.5 +- 374.125      6       bad
chromium@502472                    27110.0 +- 961.977      6       bad
chromium@502473                    27260.3 +- 399.106      6       bad
chromium@502476                    27471.6 +- 856.933      14      bad
chromium@502481                    27088.6 +- 1490.75      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 octane

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

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8968030449078394112


For feedback, file a bug with component Speed>Bisection

Simon, did the bisect identify a culprit? Should we just re-run?

It looks like it descended into v8, but stopped with an error uploading partial results to dashboard (timeout). Let me try restarting this on [chromium@502470, chromium@502471].

Will follow up after to look dashboard's logs.

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/129edb8fb80000

📍 Pinpoint job completed.
https://pinpoint-dot-chromeperf.appspot.com/job/129edb8fb80000

[turbofan] Temporarily turn off escape analysis.
By jarin@chromium.org · Fri Sep 15 10:59:26 2017
v8@2b15425b0c131869dbd5c9c486d402b6b911fca4

Bisect unable to find culprit, this regression exists in stable. Ignoring.