** Changed in: neutron
Status: New => Won't Fix
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https://bugs.launchpad.net/bugs/1809447
Title:
performance regression from mitaka to ocata
Status in neutron:
Won't Fix
Bug description:
With rally tests i have noticed a generic performance drop in production on
neutron from 50% to 10% in all components after migration to Ocata from Mitaka
and Newton.
I'm able to reproduce the problem with isolated VM using ubuntu 16.04
packages with related repo and use create port as a test because seems the more
relevant. Here below the times of 40 serial create port using curl direct to
neutron:
mitaka 0m 21s
newton 0m 31s
ocata 0m 50s
rocky 0m 37s
I have done more tests with the next releases with devstack to check
if the problem was solved, but unfortunately seems not.
I have also done a bit of profiling and seems also that the orm
produce different behavior on ocata and have some call that on mitaka
are never done:
ORMAdapter.traverse
ORMAdapter.replace
ORMAdapter._corresponding_column
ORMAdapter._locate_col
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