A quick demonstration of the latest working prototype running a site-wide HTML validation test.
You can see the test progress bar in the middle of the page and below that, not very clearly, you can see the changing test task queues.
In this case we're testing a site that has 10 URLs and so we have 10 test tasks to run.
Each task starts out as being queued: it's been created and it's impatiently waiting to be assigned to a worker. The yellow bar indicates how many queued tasks there are.
When assigned to a worker, a task is in progress. The blue bar in the video indicates how many tasks are in progress. This bar tends to grow as the number of queued tasks drops.
When finished, a task is marked as completed. That's the green bar.