CLI-option to set custom time to sleep when queue ran out of jobs

[kingcrunch]

For not time-critical jobs and less used queues it could make sense to increase the time between two polls to reduce the impact on the database

[schmittjoh]

Let's keep this on hold until the queue PR has been resolved.

[kingcrunch]

No problem. Actually I was concerned about the impact the constant polling on the server may have on the database. I mean there is a request every 2 seconds as long as the queue idles, which sounds quite much. Can you (or somebody else) can give me some insights how much the bundle affects the db-performance? Currently I let the queue idling on a server, but cannot see any impact in the newrelic stats 😕

[schmittjoh]

Could you merge the latest changes in your branch, so this can be merged?

[kingcrunch]

Rebased and fixed conflicts.

[schmittjoh]

Thanks.