Converted from MMAPv1 to wiredTiger and withing 48 hours ran into problem where threads appeared to be hanging. Attaching the diagnostic data dump to be able to review as we saw issues starting at 7:15am with assertions based on slowness and opcounters activity dropping to very low levels.

2016-10-19T07:49:57.731-0700 D - [conn39644] User Assertion: 50:operation exceeded time limit
2016-10-19T07:49:57.731-0700 D - [conn39641] User Assertion: 50:operation exceeded time limit
2016-10-19T07:51:14.968-0700 D - [conn39644] User Assertion: 50:operation exceeded time limit
2016-10-19T07:51:14.974-0700 D - [conn39641] User Assertion: 50:operation exceeded time limit
2016-10-19T07:51:20.448-0700 D - [conn39436] User Assertion: 11602:operation was interrupted
2016-10-19T07:51:20.448-0700 D - [conn39508] User Assertion: 11602:operation was interrupted
2016-10-19T07:51:20.449-0700 D - [conn39498] User Assertion: 11602:operation was interrupted