I would think using an async logging framework is a cleaner and faster approach i.e. something like log4j or glog that does IO in a separate thread. I suppose

I would think using an async logging framework is a cleaner and faster approach i.e. something like log4j or glog that does IO in a separate thread. I suppose such an approach is less ideal when using a language that isn't truly concurrent or if the code doesn't run long enough for it to be efficient to spawn a logging thread.