This MediaWiki extension shows how many jobs have been in the queue in a recent time frame. Jobs includes "refresh links" and "replace text". They create one job for each page to be updated, basically. Those jobs can sit in the queue if $wgJobRunRate is low and the wiki doesn't get much front-end traffic, that is, user clicks.
Update for this project: show $wgJobRunRate
Make the extension naturally available to admins but probably not to others.
James Montalvo started this software on April 5, 2019 at EMWCon 2019
Here is the extension running, or a predecessor or successor extension running: https://enterprisemediawiki.org/demo/index.php/Special:JobQueueGraph
forked from enterprisemediawiki/JobQueueInspector for now