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Move Streamers from Threads to Processes #13

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merged 42 commits into from
Apr 21, 2021
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I ran into some issues when running multiple RealTimeTribes with many templates that data would appear gappy from seedlink clients. I suspect that this was due to the MainProcess hogging the thread-time and not allowing the Streamer any of the Thread.

To get around this I have migrated the Streamers to Processes, with associated Queues for communication. This has been quite complicated!

I'm running a longer-term test with the same settings that resulted in the issue to see if this crops up again...

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calum-chamberlain commented Apr 19, 2021

At the moment multiprocessing is not working on Windows or MacOS, I think because the Streamer classes are not pickleable, and Windows uses a different multiprocessing process instantiation. For now I have set it so that on Windows threading is used, and everywhere else, multiprocessing is used.

This may mean that Windows and MacOS users will run in to rate-limitations and gaps in data. If anyone on windows finds this PR in the future, this might be why!

@calum-chamberlain calum-chamberlain merged commit 1101a79 into master Apr 21, 2021
@calum-chamberlain calum-chamberlain deleted the streamer-process branch April 21, 2021 08:15
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