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[Dmitriy Rabotyagov <2081173@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

With upgrade of Neutron from 23.2.0 to 24.0.0.b1 there is a 2 times
regression in response time for security groups listing.

Moreover, on 23.2.0 this listing could be coming from smth like cache
from time to time, as API response was super low after multiple
subsequent requests. This no longer happens on 24.0.0.b1.

Some investigation on what caused regression led me to the patch
https://review.opendev.org/c/openstack/neutron/+/883907

In test environment I was using neutron was running with eventlet inside
a virtualenv.

I also installed neutron manually from the specific SHAs to show the
difference in execution time between 2 commits coming each after
another.

Log with requests is attached.

** Affects: neutron
     Importance: Undecided
         Status: New

** Attachment added: "regression_pinpint1.txt"
   https://bugs.launchpad.net/bugs/2081173/+attachment/5819313/+files/regression_pinpint1.txt

** Description changed:

  With upgrade of Neutron from 23.2.0 to 24.0.0.b1 there is a 2 times
  regression in response time for security groups listing.
  
  Moreover, on 23.2.0 this listing could be coming from smth like cache
  from time to time, as API response was super low after multiple
- subsequent requests.
- 
- This no longer happens on 24.0.0.b1.
+ subsequent requests. This no longer happens on 24.0.0.b1.
  
  Some investigation on what caused regression led me to the patch
  https://review.opendev.org/c/openstack/neutron/+/883907
  
  In test environment I was using neutron was running with eventlet inside
  a virtualenv.
  
  I also installed neutron manually from the specific SHAs to show the
  difference in execution time between 2 commits coming each after
  another.
  
  Log with requests is attached.

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https://bugs.launchpad.net/bugs/2081173

Title:
  security-groups-rules-belongs-to-default-sg slows down SG GET
  operations

Status in neutron:
  New

Bug description:
  With upgrade of Neutron from 23.2.0 to 24.0.0.b1 there is a 2 times
  regression in response time for security groups listing.

  Moreover, on 23.2.0 this listing could be coming from smth like cache
  from time to time, as API response was super low after multiple
  subsequent requests. This no longer happens on 24.0.0.b1.

  Some investigation on what caused regression led me to the patch
  https://review.opendev.org/c/openstack/neutron/+/883907

  In test environment I was using neutron was running with eventlet
  inside a virtualenv.

  I also installed neutron manually from the specific SHAs to show the
  difference in execution time between 2 commits coming each after
  another.

  Log with requests is attached.

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