Most of them pages have thousands of revisions each and are a bunch. With the batched deletion feature now live I guess it might not be a problem but I'd like to ping you nonetheless because I don't want to cause db issues or high replag while doing this.
I'm thinking about using a pywiki script. Perhaps a waiting time of 30 seconds between deletions with a maxlag parameter of 3 would be db friendly?
Please let me know. Thank you.