Non-account backups should honor pigz compression preference
Pigz compression should be used for all backups, not just account packaging:
Per case 68061, pigz is not used for important configuration files nor any directory backups outside of cPanel account backups.
Example use case, based on a cPanel support request:
A real scenario where pigz should have offered significant improvement is a very sizable MySQL data directory, in this case at 59 GB of disk usage. When gzip was used, the backups ran for 9 hours generating server load before being forcefully killed to return the system back to normal operation.
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