Why is a sidekiq scheduled job running so late?

Question

I schedule a job for 2 minutes from now.

There is nothing else queued up. There are no errors.

I wait 4 minutes.

Looking at the queue I see the job was enqueued 4 minutes ago and scheduled 2 minutes ago. But it has still not run. Eventually it runs with no errors.

I see the redis poll interval is sidekiq's process_count*15 seconds. And start times are randomized, so on average, the queue should be polled every 15 seconds. Waiting more than 2 minutes seems unusual.

Why is this happening?

Answer 1

Upgrade to the latest sidekiq.