a022301b50
This is a tweak to changes done to fix bug 1834637. Specifically, this change addresses scaling. The previous gerrit change had modifications to all OVN sub-ports performed as a single transaction. That did not account for race-condition on neutron DB queries, which leads to timeouts under heavy loads. Another cleanup done by this change is to fold an additional update on neutron db into ovn trunk driver. That saves update from doing another database transaction, thus making it faster. The no longer needed function in mech_driver was called _update_subport_host_if_needed By breaking the iteration into multiple transactions, the change in time is marginal: Service-level agreement NeutronTrunks :: neutron.create_trunk from 34.2 sec to 35.6 for 50%ile from 35.6 sec to 36.1 for 95%ile This patch is a cherry pick from networking-ovn stable/train [1], that is now part of networking-ovn migration to neutron repo. [1]: https://review.opendev.org/#/c/698863/ Change-Id: I118f93cdd34a1d25327a0dc61367720ac6559001 Closes-Bug: #1834637 Co-authored-by: Maciej Józefczyk <mjozefcz@redhat.com> (cherry picked from commit c418dd720b9be9047d779f32407c474e90cb0002) |
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