I have installed piwik about 2 weeks ago for my site. We have about 1000 visitors per day and archiving process starts every 1800 seconds.
In this 2 weeks piwik_log_link_visit_action table contains more than 21000 rows and piwik_log_visit table more than 770 rows.
I want to know a bandwidth usage of 1 GB per day is normal for my host?!? :S