horizon-pending-bar decreases performance

[Ivan Lozgachev]

Steps to reproduce
1. Create 100 volumes
2. Set number of items per page to 100 (in Admin -> Settings -> User Settings -> Items Per Page)
3. Open Volumes page (Project -> Compute -> Volumes)
4. Select all volumes and delete them (to get progress bar showed on all items). The same could be do by executing simple script which deletes all volumes.

The page performance is critically slow. Execution of script

$(".horizon-pending-bar").hide()

significantly improve page performance.

Please do not show "horizon-pending-bar" when number of *pending* instances on page more than 20~30. This looks ugly and has bad UX.

[Rob Cresswell (robcresswell-deactivatedaccount)]

Which version is this?

[Ivan Lozgachev (ilozgachev)]

I saw that on MOS 8.0
MOS 9.0 is not tested yet but I suppose that result will be the same.

[Ivan Lozgachev (ilozgachev)]

Yes, the same result on MOS 9.0

[Timur Sufiev (tsufiev-x)]

Rob, Ivan meant that it's actual for stable/liberty and stable/mitaka.

Sorry for the confusion, I'm going to keep this bug as an upstream one.

[Gary W. Smith (gary-w-smith)]

This is a reasonable request. Marking as low since there is a simple workaround (use a smaller page size)