Comment 16 for bug 1823251
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| Balazs Gibizer (balazs-gibizer) wrote | #16 |
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a60fb26
(Get the code!)
Finally I managed to reproduce the same issue locally.
Reproduction steps:
1) create IO. I did started coping files in a loop.
$ for i in {1..1000}; do cp loadfile loadfile3; done &
2) create load on mysqld.
$ mysqlslap -a -u openstack_citest -p --iterations 1000 --number-of-queries 8000 --number-char-cols 20 --number-int-cols 20 --concurrency 80 --password=
3) run the nova unit test suite
$ tox -e py38
With enough load the test times out but due to the load the timeout time is pretty random as the signal handler also gets delayed due to the same load.
[...]
File "/root/
data = self._rfile.
File "/usr/lib/
return self._sock.
File "/root/
return self._recv_
[...]
File "/root/
return self.poll.
File "/root/
raise TimeoutException()
The nova db migration unit test sets timeout to these tests specifically: https:/
But interrestingly the api db functional migration tests do not https:/
Now that I can reporduce this I can play with the timeout values to see what is reasonable.
Full primary stack trace:
File "/root/
self.
File "/root/
cursor.
File "/root/
result = self._query(query)
File "/root/
conn.query(q)
File "/root/
self.
File "/root/
result.read()
File "/root/
first_packet = self.connection
File "/root/
packet_header = self._read_bytes(4)
File "/root/
data = self._rfile.
File "/usr/lib/
return self._sock.
File "/root/
return self._recv_
File "/root/
self.
File "/root/
self.
File "/root/
return trampoline(fd, read=read, write=write, timeout=timeout,
File "/root/
return hub.switch()
File "/root/
return self.greenlet.
File "/root/
self.
File "/root/
presult = self.do_
File "/root/
return self.poll.
File "/root/
raise TimeoutException()
fixtures.