On 10/22/2018 11:59 AM, Matt Riedemann wrote:
Thanks for this. Have you debugged to the point of knowing where the
initial DB query is starting from?
Looking at history, my guess is this is the change which introduced it
for all requests:
https://review.openstack.org/#/c/276861/
From that change, as far as I can tell, we only needed to pre-join on
metadata because of setting the "launch_metadata" variable:
https://review.openstack.org/#/c/276861/1/nova/api/metadata/base.py@145
I don't see anything directly using system_metadata, although that one
is sometimes tricky and could be lazy-loaded elsewhere.
I do know that starting in ocata we use system_metadata for dynamic
vendor metadata:
https://github.com/openstack/nova/blob/stable/ocata/nova/api/metadata/vendordata_dynamic.py#L85
Added in change: https://review.openstack.org/#/c/417780/
But if you don't provide vendor data then that should not be a problem.
--
Thanks,
Matt
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