Agreed about the thread usage: the code I put together for threads in various languages is as naive as possible. Having a thread pool in proportion to the num

Agreed about the thread usage: the code I put together for threads in various languages is as naive as possible. Having a thread pool in proportion to the number of CPUs and pulling tasks from a queue (a la "Nginex") would be much more efficient. Interesting comment about the date formatter. I might put in something some time to compare the relative time spent in formatting vs the other concatenation. I suppose I'd be grateful if somebody made a fork with versions showing the split of time between those steps.