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Correct me if I'm mistaken, but it seems like this wouldn't really work with a web server that has several worker processes like uwsgi in preforking mode. Each worker process would be sandboxed to its own STATS object and attempting to serve the HTTP/Graphite server in its own background thread; all of which would be trying to access the same port.

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Correct. This is intended more for daemons with one or two processes per server, or for handy debugging of a single instance on a development machine. In order to monitor something like preforking uwsgi, you would need a way to aggregate stats from all the processes, which this library doesn't do.

(You can change the port the HTTP server listens on, though. If you have ten workers, you can have them listen on ten different ports.)

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