Re: HP shared memory limits

David Williams wrote: > > In article <350D89F3.2A03@eds.com>, Greg Moye <greg.moye@eds.com> writes > >OK large-scale HP people, here's a challenge: > > > >HP-UX 10.20 supports up to 1.75 GB shared memory per Informix engine > >instance, carve it up as you will. Suppose I created such a system on a > >large HP box. Could I then create a second similarly large instance on > >the same box/OS image? A third? Anybody know where I'd hit > >architectural limits?? > > > >Nevermind the advisability or operational problems of doing so, I don't > >plan to actually do it, but I need to know where the limits are. > > > >Many Thanks - Greg > > Shouldn't be a problem as long as you have enough swap space. > 1.5GB of shared memory = 1.5 Gb of swap. > > Most version of UNIX support up to 100 shared memory segements > with no problems i.e. 33 instances. You could probably go even > further.. > > David Williams Hmmmmm......let me think about this one. Okay, David. I might agree with you, but I would want to try it first. Just remember that HP-UX 10.20 does not like to have more than two (2) Informix virtual shared memory segments, remember? More than two (2), and they get paged out. HP-UX problem, right? My guess is that "two (2) limit" would apply to each instance. Sheesh. I wish I had a better memory. Oh, well, something has to go first, right? -- David Weis dweis@louisville-i-market.com Louisville Internet Marketing Service 1425 South First Street Louisville, KY 40208 USA 502-637-7316 (Voice) 502-636-1553 (FAX) http://www.louisville-i-market.com thank goodness for bookmarks!!