** Changed in: nova
Status: In Progress => Invalid
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Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1788564
Title:
Increase set_target_cell performance by refactor where we lock
Status in OpenStack Compute (nova):
Invalid
Bug description:
There is a lock in:
https://github.com/openstack/nova/blob/def4b17934a3b2cf783d0177d6a9632916dfd10f/nova/context.py#L363
it is used to prevent from creating duplicated db and mq connections
for racy context content switching, the rece condition actually only
occours if and only if there is no infomation about this cell in the
cache(first time call).
As for the current implementation, we lock the whole call, which may
affect performance.
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