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Description of problem: In 6.5 Beta, when going from the "All Hosts" to the "Content Views" page it is slow, taking close to 9 seconds to load 2 entries. There are also two calls made to the same endpoint, which you can see from http and production.log 66.187.232.65 - - [23/Apr/2019:15:52:02 -0400] "GET /content_views HTTP/1.1" 200 4299 "https://sat6-napartnersrhpdsdem-khu8aqcz.srv.ravcloud.com/hosts" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:65.0) Gecko/20100101 Firefox/65.0" 66.187.232.65 - - [23/Apr/2019:15:52:03 -0400] "GET /content_views HTTP/1.1" 200 4302 "https://sat6-napartnersrhpdsdem-khu8aqcz.srv.ravcloud.com/hosts" "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:65.0) Gecko/20100101 Firefox/65.0" 2019-04-23T15:52:02 [I|app|] Started GET "/content_views" for 66.187.232.65 at 2019-04-23 15:52:02 -0400 2019-04-23T15:52:02 [I|app|d3fd7803] Processing by Bastion::BastionController#index as HTML 2019-04-23T15:52:02 [I|app|d3fd7803] Parameters: {"bastion_page"=>"content_views"} 2019-04-23T15:52:02 [I|app|d3fd7803] Current user set to admin (admin) 2019-04-23T15:52:02 [I|app|d3fd7803] Rendering /opt/theforeman/tfm/root/usr/share/gems/gems/bastion-6.1.16/app/views/bastion/layouts/application.html.erb 2019-04-23T15:52:02 [I|app|d3fd7803] Rendering /opt/theforeman/tfm/root/usr/share/gems/gems/bastion-6.1.16/app/views/bastion/layouts/assets.html.erb 2019-04-23T15:52:03 [I|app|d3fd7803] Rendering layouts/base.html.erb 2019-04-23T15:52:03 [I|app|d3fd7803] Rendered layouts/base.html.erb (29.2ms) 2019-04-23T15:52:03 [I|app|d3fd7803] Rendered /opt/theforeman/tfm/root/usr/share/gems/gems/bastion-6.1.16/app/views/bastion/layouts/assets.html.erb (67.3ms) 2019-04-23T15:52:03 [I|app|d3fd7803] Rendered /opt/theforeman/tfm/root/usr/share/gems/gems/bastion-6.1.16/app/views/bastion/layouts/application.html.erb (68.3ms) 2019-04-23T15:52:03 [I|app|d3fd7803] Completed 200 OK in 80ms (Views: 64.7ms | ActiveRecord: 6.4ms) 2019-04-23T15:52:03 [I|app|] Started GET "/content_views" for 66.187.232.65 at 2019-04-23 15:52:03 -0400 2019-04-23T15:52:03 [I|app|b675e33b] Processing by Bastion::BastionController#index as HTML 2019-04-23T15:52:03 [I|app|b675e33b] Parameters: {"bastion_page"=>"content_views"} 2019-04-23T15:52:03 [I|app|b675e33b] Current user set to admin (admin) 2019-04-23T15:52:03 [I|app|b675e33b] Rendering /opt/theforeman/tfm/root/usr/share/gems/gems/bastion-6.1.16/app/views/bastion/layouts/application.html.erb 2019-04-23T15:52:03 [I|app|b675e33b] Rendering /opt/theforeman/tfm/root/usr/share/gems/gems/bastion-6.1.16/app/views/bastion/layouts/assets.html.erb 2019-04-23T15:52:03 [I|app|b675e33b] Rendering layouts/base.html.erb 2019-04-23T15:52:03 [I|app|b675e33b] Rendered layouts/base.html.erb (25.8ms) 2019-04-23T15:52:03 [I|app|b675e33b] Rendered /opt/theforeman/tfm/root/usr/share/gems/gems/bastion-6.1.16/app/views/bastion/layouts/assets.html.erb (58.6ms) 2019-04-23T15:52:03 [I|app|b675e33b] Rendered /opt/theforeman/tfm/root/usr/share/gems/gems/bastion-6.1.16/app/views/bastion/layouts/application.html.erb (59.3ms) 2019-04-23T15:52:03 [I|app|b675e33b] Completed 200 OK in 71ms (Views: 56.7ms | ActiveRecord: 5.3ms) NOTE: This doesn't happen when refreshing the Content View page, it seems you must be on the "All Hosts" page beforehand.
I am still seeing this behavior on a later build with tfm-rubygem-katello-3.10.0.46-1.el7sat.noarch. I do not see the same behavior on 6.4.3; therefore, marking as a Regression.
Created redmine issue https://projects.theforeman.org/issues/27175 from this bug
The issue here likely relates to Turbolinks in core Foreman since it has been seen before: https://projects.theforeman.org/issues/11884. There are a number of pages that have two GET requests rather than one when Turbolinks needs to do a full page refresh. This depends on differences in the JavaScript between the two pages that are being navigated between. Other pages where I've seen the duplicate GETs: All Hosts <-> Create Host All Hosts <-> About Create Host <-> Content Hosts Create Host <-> OSTree Branches The duplicate GET happens more often to/from core Foreman pages, perhaps it relates to jQuery as well. The duplicate GET request doesn't appear to be causing significant performance issues. In a performance test on a Satellite 6.5 instance with 83 Content Views, there was on average a 0.5 second decrease in speed when a duplicate GET request occurred. If there was a significant performance decrease when accessing Content Views in the 6.5 Beta, it's probably unrelated to the duplicate GET requests.
Upstream bug assigned to iballou@redhat.com
We are closing this as WONTFIX because Turbolinks classic (which causes this behavior) is soon going to be dropped from Satellite.