Cron run options for less than 1 hour

Changes are made on on 11.x (our main development branch) first, and are then back ported as needed according to our policies.

I think this is won't fix. If you need to run cron more than hourly, it is recommended that you do it from outside of Drupal, via a cron daemon or other task scheduler system. The automated cron module has some downsides: it runs after pages are generated and so there is no guarantee it will run on time, or at all, if the site does not receive traffic for a certain amount of time. It also ties up the webserver for longer than is necessary, which if it is configured to run every minute may be significant.

See https://www.drupal.org/docs/user_guide/en/security-cron.html → for more information.