We have one large content database, consisting of two site collections with 250 GB space .

We have deleted one large site with 100 GB size from content database using gradual site delete job.

The gradual site delete job is running every day and running just for 1 to 2 minutes.

The Job history is showing it is running on the desired content database where our deleted site was hosted, but ending within 1 to 2 minutes .

Noticed that unused space in content database is increasing and the content database table rows are getting changed.

Before Deletion: Alldocs - 17112725 AllLinks - 15537151 NameVluePair - 16992586 storagemetrics - 17112723 alluserdata - 1678086 doctostreams – 5867519

After deletion table with rows.

Alldocs - 1570168 AllLinks - 7728077 NameVluePair - 8 storagemetrics - 1570168 alluserdata - 1375680 doctostreams - 2553731

Note--content database is hosting another site with 100GB data.

how we can confirm whether this job is running and deleting the site content with complete data of 100 GB from content database? How long it will take to completely delete the content.