
Due to Python's GIL [1], we can't use multiple threads for running OpenStack services without a performance penalty, since the execution ends up serialized, which defeats the purpose. Instead, we should use several processes, since this approach doesn't have this limitation. [1] https://wiki.python.org/moin/GlobalInterpreterLock Change-Id: I3edd574f60be594b18da78284831ffd19d2819f7