Unbound Unusually Irregular or Normal?

[bluepoint]

12:00:00 (unbound_rpz.sh): 13048 Attempting to Download 1 of 1 from https://urlhaus.abuse.ch/downloads/rpz/.
12:00:00 (unbound_rpz.sh): 13048 Reload unbound for zone named rpz.urlhaus.abuse.ch
12:15:00 (unbound_rpz.sh): 29314 Attempting to Download 1 of 1 from https://urlhaus.abuse.ch/downloads/rpz/.
12:15:00 (unbound_rpz.sh): 29314 Reload unbound for zone named rpz.urlhaus.abuse.ch
12:30:00 (unbound_rpz.sh): 13225 Attempting to Download 1 of 1 from https://urlhaus.abuse.ch/downloads/rpz/.
12:30:00 (unbound_rpz.sh): 13225 Reload unbound for zone named rpz.urlhaus.abuse.ch
12:45:00 (unbound_rpz.sh): 29494 Attempting to Download 1 of 1 from https://urlhaus.abuse.ch/downloads/rpz/.
12:45:00 (unbound_rpz.sh): 29494 Reload unbound for zone named rpz.urlhaus.abuse.ch

I find it unusual for unbound's rpz firewall definition to alternately dip then goes up with such a difference every 15 minutes. Is this normal?

 

[dave14305]

Those numbers are process IDs, not line counts.

 

[bluepoint]

Those numbers are process IDs, not line counts.

Ah, I see. No wonder why it's never consistent with the count. Thanks