New submission from QuadCorei8085 :
I'm trying to do something periodically and this would be on the millisec level
precision.
However for some reason I could not achieve precise timing in a task.
Below example shows that a simple sleep randomly awakes with a jitter between
0.1-20.0ms I haven't hystogrammed the distribution but it seems to be mostly
19-20ms.
Any way to achieve better timings with asyncio?
async def test_task():
while True:
ts_now = time.time();
await asyncio.sleep(1.000);
print("{}".format((time.time()-ts_now)*1000.0));
if __name__ == "__main__":
loop = asyncio.get_event_loop()
loop.create_task(thread_main())
loop.run_forever()
--
components: asyncio
messages: 401769
nosy: QuadCorei8085, asvetlov, yselivanov
priority: normal
severity: normal
status: open
title: asyncio scheduler jitter
versions: Python 3.8
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<https://bugs.python.org/issue45194>
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