During sys-perf test, observed test hang during insert_capped for all the variants it runs against:

• standalone
• 1-node repl
• 3-node repl

in evergreen log, the tests eventually timed out due to no output for 2 hours.

[2015/11/02 23:04:31.563] >>> insert_capped-wiredTiger : 15783.010987220374 1
[2015/11/03 00:56:25.662] Received abort signal - stopping.

be able to manually verify the issue with latest build of 0899ba98f6