Comments (1)
Solved: not Janus related. Basically, this:
consumers = [loop.run_in_executor(None, consume_data, q.sync_q, x) for x in range(20)]
# in BaseEventLoop.run_in_executor:
...
if executor is None:
executor = concurrent.futures.ThreadPoolExecutor()
self._default_executor = executor
Causes only one thread to be active, while this, while seemingly functionally identical:
executor = concurrent.futures.ThreadPoolExecutor()
consumers = [loop.run_in_executor(executor, consume_data, q.sync_q, x) for x in range(20)]
Causes 8 threads (whatever the default thread count is) to be active.
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