This can probably be closed, but Kevin should chime in on any minor
performance improvement that may be left.
** Changed in: neutron
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1502297
Title:
[RFE] Improve SG performance as VMs/containers scale on compute node
Status in neutron:
Fix Released
Bug description:
Please refer to the comments in the following bug:
https://bugs.launchpad.net/neutron/+bug/1492456
In which it was suggested to handle improving SG programming
performance as a RFE bug.
To Summarize the problem, when there are about 160 VMs, the neutron-
ovs-agent takes more than 2 seconds per VM to program the iptables
rules mainly because of the inefficiency in the iptables programming
code.
#VMs = 0, provision 10 new VMs on compute node
cumulative time in _modify_rules : Before 0.34 After: 0.20
#VMs = 10, provision 10 new VMs on compute node
cumulative time in _modify_rules : Before 1.68 After: 0.94
#VMs = 20, provision 10 new VMs on compute node
cumulative time in _modify_rules : Before 4.27 After: 2.12
#VMs = 40, provision 10 new VMs on compute node
cumulative time in _modify_rules : Before 11.8 After: 6.44
#VMs = 80, provision 10 new VMs on compute node
cumulative time in _modify_rules : Before 20.2 After: 13.6
#VMs = 160, provision 10 new VMs on compute node
cumulative time in _modify_rules : Before 50 After: 23.2 <<<<< more than 2
seconds per VM !!!
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