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Description of problem:
If the katello install has a large number of packages, the packages page can be very slow (over 18 seconds). In particular, this API call takes quite some time to return:
https://localhost/katello/api/v2/packages?organization_id=1&page=1&paged=true&search=
Ideally, the page would load in less than 5 seconds.
Version-Release number of selected component (if applicable): 6.2.7
How reproducible:
Steps to Reproduce:
1. sync a bunch of repos containing numerous packages
2. go to content -> packages page
3. wait
Actual results: 18+ seconds of waiting
Expected results: 5 or less seconds of waiting
Additional info:
2017-02-03 11:49:07 [app] [I] Started GET "/katello/api/v2/packages?organization_id=1&page=2&paged=true&search=" for 10.10.121.39 at 2017-02-03 11:49:07 -0500
2017-02-03 11:49:07 [app] [I] Processing by Katello::Api::V2::PackagesController#index as JSON
2017-02-03 11:49:07 [app] [I] Parameters: {"organization_id"=>"1", "page"=>"2", "paged"=>"true", "search"=>"", "api_version"=>"v2"}
2017-02-03 11:49:18 [app] [I] Rendered /opt/theforeman/tfm/root/usr/share/gems/gems/katello-3.0.0.95/app/views/katello/api/v2/packages/index.json.rabl within katello/api/v2/layouts/collection (3513.7ms)
2017-02-03 11:49:18 [app] [I] Completed 200 OK in 10947ms (Views: 22.9ms | ActiveRecord: 10829.9ms)
the SQL is too big to paste, but the explain is at https://explain.depesz.com/s/JZG
Verified in Satellite 6.2.12 Snap 1.
On a system with ~45k packages, the average page load times varied between 3 and 6.5 seconds. However, there are occasional times when the page will take around 10-11 seconds to load. See attached screenshot for long and average load times.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2017:2803