** Changed in: neutron
Status: Fix Committed => Fix Released
** Changed in: neutron
Milestone: None => kilo-3
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https://bugs.launchpad.net/bugs/1370361
Title:
Neutron need to reduce number of network db calls during
get_devices_details_list
Status in OpenStack Neutron (virtual network service):
Fix Released
Bug description:
Currently each Neutron agent will impose db calls to Neutron Server to
query devices, port and networks when it get start up.
Take ml2 rpc.py method get_device_details for example:
It can be noticed that during this call:
it will get each port and then get each network that port associated
within get_bound_port_context. Actually in prodcution env. Most
ports are belonging to a much less number of networks. Maybe even one
compute host with 500VM with single network.
As the netwok information is static information and was used to
construct the device json. It's suggested to initially having these
network prefetched. instead of query it each time within each port.
This will reduce the db calls a lot.
with less db calls, it will benefit neutron server performance and
database hit when VM number in large.
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