[Bug 1624264] Re: Dashboard take 5-10 secs for OpenStack operations

[Akihiro Motoki]

I tested with my local env which has 10 instances in a single project with Queens development version. They are based on Chrome development tools.
The first component is the time required to load the main page. The second component is the time required to load the related things like (JS, header, image).

Project Overview :  1.02 sec + 1.46sec (= 2.48 sec)
Project Instances : 2.77sec + 1.58 sec (= 4.35 sec)
Admin Overview : 1.40 sec + 1.46 sec (= 2.86 sec)
Admin Instances : 2.08 sec + 1.29 sec (= 3.37 sec)

The result is not so bad compared to the reported result.

It seems horizon needs additional ~1.5 sec to load extra contents (like JS and so on).
The time required to process a main page depends on contents, but 10 sec looks longer.

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https://bugs.launchpad.net/bugs/1624264

Title:
  Dashboard take 5-10 secs for OpenStack operations

Status in OpenStack Dashboard (Horizon):
  Incomplete
Status in horizon package in Ubuntu:
  Triaged

Bug description:
  Dashboard takes around 5-10secs for OpenStack operations (e.g opening instance's page etc) from project panel in admin tenant. Although, if we open any page from admin panel, it takes around 2-3 seconds. Similarly, if we open any page from any other tenant, 5-10 secs are consumed.
  CLI commands seem to be working fine as they take around 1-3.5 secs.

  Please let me know the logs to share. Neutron, Keystone, Nova logs
  doesn't show any errors regarding slowness in API calls.

  OpenStack Release: Mitaka
  Horizon version: 9.1.0

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