On Mon, 6 Feb 1995 13:07:34 CST Rich Winkel <[log in to unmask]> said: >I notice roadmap@ua1vm now has over 17,000 subscribers. This must be >quite a load on their 3090. Is there an upper limit? The TOPTEN list had 44202 last time I checked it, and it's currently the largest single (non-peered) list. It is growing very fast, I think it gained about 10000 in under a month. The upper limit for VM would be the amount of virtual storage you can make available to LISTSERV (a very real limit for S/370 sites), and of course the amount of mail your machine can deliver. Otherwise LISTSERV uses all sorts of algorithms to be able to handle large lists effortlessly. You may have seen the Windows NT figures for a 100,000 subscriber list on a 90MHz Pentium system: > (QUIET) ADD: min=0.06 sec, max=0.88 sec, typical=0.2 sec > > (QUIET) DELETE: min=0.05 sec, max=0.84 sec, typical=0.8 sec > > Multiply by about 2.5 for 486/66 figures, or divide "max" figures by 10 > for 10,000 subscribers. This again is for a hundred thousand > subscribers. UGA is the largest LISTSERV sites in terms of distributed mail and it delivers up to a million messages a day. Eric