Hi. I post this in the hopes that it may help someone else.
I recently upgraded my Ubuntu installation (using the automatic update program) and started getting java OutofMemory errors (could not start a new thread) when a stream file was connected or a VOD was requested. The OS upgrade went to a new kernel version (4.4.0). When I booted with an older kernel (3.16.0), the errors went away and Wowza Streaming Engine works as expected. The upgrade also installed Java 8 (the open source version; not Oracle). I installed both Java 7 and 6 (both Oracle versions) and tried them. They were better, but did not solve the problem.
I am submitting a request to Ubuntu support to ask about changes to the threads modules with the new kernel.
Is Wowza making plans to certify the version 4 linux kernel?