This release should have fixed below issues, and the issue #279 should cause a lot of socket CLOSE_WAIT, and potentially has implications to performance measurements.
#279: "IsAlive" for drivers goes red after a while
#278: unable to run workload against HP public cloud
#276: no response with any data when running on RHEL 7.1
#275: It appears that Cosbench does not properly close driver sockets.
#274: FreeMarker template error: The following has evaluated to null or missing ...
#270: S3: Timeout modifies only the connection timeout