openHAB 4 migration FAQ

I also seem to have this issue now (with 4.0.1):

  PID USER      PR   NI   VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
 5147 openhab   20   0  887048 581872   4768 R  98.7  58.5 102:08.36 upnp-main-queue