Public bug reported: I just found there is no cache for microversion check which may cause almost 40 unnecessary API calls.
There are two actions for instances table need to check the microversion in allowed() function, see https://github.com/openstack/horizon/blob/master/openstack_dashboard/dashboards/project/instances/tables.py#L870 but unfortunately, there is no cache for this check, see https://github.com/openstack/horizon/blob/master/openstack_dashboard/api/nova.py#L60 And function get_microversion(request, feature) is also used by other functions. Based on my test, after adding cache for this function, about 3+ seconds are saved. ** Affects: horizon Importance: Undecided Assignee: Feilong Wang (flwang) Status: New ** Changed in: horizon Assignee: (unassigned) => Feilong Wang (flwang) -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Dashboard (Horizon). https://bugs.launchpad.net/bugs/1721423 Title: [Performance] Bad performance on instances list panel Status in OpenStack Dashboard (Horizon): New Bug description: I just found there is no cache for microversion check which may cause almost 40 unnecessary API calls. There are two actions for instances table need to check the microversion in allowed() function, see https://github.com/openstack/horizon/blob/master/openstack_dashboard/dashboards/project/instances/tables.py#L870 but unfortunately, there is no cache for this check, see https://github.com/openstack/horizon/blob/master/openstack_dashboard/api/nova.py#L60 And function get_microversion(request, feature) is also used by other functions. Based on my test, after adding cache for this function, about 3+ seconds are saved. To manage notifications about this bug go to: https://bugs.launchpad.net/horizon/+bug/1721423/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
