On Tue, 18 Apr 2000 14:19:36 -0400, Pete Weiss <[log in to unmask]> wrote: >Unless you're using the hiperf. version, I believe adding thousands of users will be time consuming. > >I don't have any stats myself -- just rumors. Bulk-adding 65,000 users to a list running on LISTSERV Classic (not HPO) took 74 minutes on my P166 machine. Same list bulk-added while running LISTERV HPO version took just under 2 minutes (1:54 to be exact) LISTSERV starts giving performance warnings for any list over 5000 subscribers. In practice you may be ok up to 20,000 but after that performance really suffers and you need HPO.