Avraham Mahfuda added the comment:
If I understand the following code correctly, there seems to be a busy loop
waiting for the SimpleQueue.put to signal that an item was entered to queue.
https://github.com/python/cpython/blob/3.7/Modules/_queuemodule.c#L217
Avraham Mahfuda added the comment:
1. I can confirm that the posted code above is the correct one.
2. The 100% CPU was observed in a docker instance using python:3.7.0-alpine3.8
image.
3. The docker image was running on a 2 cores VM.
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Python
New submission from Avraham Mahfuda :
In concurrent.futures.thread line 78 is busy-waiting if the queue is empty,
which may cause the CPU to spin to 100% when idle.
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messages: 361410
nosy: Avraham Mahfuda
priority: normal
severity: normal
status: open
title: ThreadPoolExecutor is
