If you are using Drupal on your hosting accounts, you may notice sudden CPU usage spikes that will saturate all your available CPU and hit your resource limits. This is a known issue, and the bug was first reported to Drupal on 12/29/2019, however no official Drupal fix or response has been made. The link below outlines some user experiences and some possible tuning options within Drupal that may help the situation.
https://www.drupal.org/project/backup_migrate/issues/3103562
