Comment 8 for bug 1977831

Reviewed: https://review.opendev.org/c/openstack/neutron/+/845704
Committed: https://opendev.org/openstack/neutron/commit/a57d47bcb2df76df81eed3ad44c8f49e7dbda0e8
Submitter: "Zuul (22348)"
Branch: stable/yoga

commit a57d47bcb2df76df81eed3ad44c8f49e7dbda0e8
Author: Fernando Royo <email address hidden>
Date: Tue Jun 7 13:51:51 2022 +0200

    Optimize queries for port operations

    Port create/update are most time-consuming operations
    on subnet creation. As example, in those cases where
    several subnets are created over the same network the
    response time for those port operations is linearly
    increased as the total subnets increases.

    This patch improves the number of queries required on port
    operations in order to reduce the response time.

    Closes-Bug: #1977831

    Change-Id: I0fccf36a2035e8f6c2fa8dab0307358da600c8f7
    (cherry picked from commit c25097b0b0da2af9021699036a69cd10e66533b1)