Looks like this is only flaky on Linux Dbg config, I am guessing that we just need a longer timeout for whatever action was stuck.

This is flaky on Linux Dbg only:

https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=telemetry_perf_unittests&showExpectations=true&tests=benchmarks%2Fsystem_health_smoke_test%2FSystemHealthBenchmarkSmokeTest%2Fsystem_health%2Fmemory_desktop%2Fbrowse%3Atools%3Amaps

To be clear, from all of the failures that I have seen, the swarming job times out because that test crashed, and then the 2nd or 3rd retry times out.  So from what I can tell, it's a crashing problem, not strictly a thing being stuck.

Hinoka: this is the only failing stack I've seen so far:

TimeoutException: Timed out while waiting 60s for IsJavaScriptExpressionTrue.
  Console output:


Can you give the log link that shows the test crashed?

Oh I assumed it was a crash because I saw this:

(/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py:487 _ConvertExceptionFromInspectorWebsocket) The app is probably crashed:
  
  Found Minidump: True
  Stack Trace:

If I misinterpreted that, then ignore my prior statement.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0c0fb93082de24033db27bc03849b744ba0bb9cb

commit 0c0fb93082de24033db27bc03849b744ba0bb9cb
Author: Ned Nguyen <nednguyen@google.com>
Date: Tue Jan 30 12:48:07 2018

Increase timeout when waiting for page to be updated in browse:tools:maps test

Bug: 806057
Change-Id: Ida24c4484fa417cc413e512a845103e5bcef7d2d
Reviewed-on: https://chromium-review.googlesource.com/891687
Reviewed-by: Juan Antonio Navarro Pérez <perezju@chromium.org>
Commit-Queue: Ned Nguyen <nednguyen@google.com>
Cr-Commit-Position: refs/heads/master@{#532848}
[modify] https://crrev.com/0c0fb93082de24033db27bc03849b744ba0bb9cb/tools/perf/page_sets/system_health/browsing_stories.py

I just got this three times in a row on https://chromium-review.googlesource.com/c/chromium/src/+/1141735/2

https://ci.chromium.org/p/chromium/builders/luci.chromium.try/android-marshmallow-arm64-rel/42948
https://ci.chromium.org/p/chromium/builders/luci.chromium.try/android-marshmallow-arm64-rel/43015
https://ci.chromium.org/p/chromium/builders/luci.chromium.try/android-marshmallow-arm64-rel/43125

I don't think I've broken anything.