mlevin@jade.tufts.edu (05/04/91)
Please reply to mlevin@jade.tufts.edu. I have a VaxStation II/RC, with two 4 Meg memory boards. I want to replace one of these with an 8 Meg memory board. Once I do, do I need to rebuild Ultrix again, or can I simply turn it on after that? And, what about the swap space - do I need to make that bigger to match the bigger memory? If so, how? I would greatly appreciate any help on the matter. Mike Levin
alan@shodha.enet.dec.com ( Alan's Home for Wayward Notes File.) (05/05/91)
In article <1991May4.140144.22763@athena.mit.edu>, mlevin@jade.tufts.edu writes: > > Please reply to mlevin@jade.tufts.edu. I'll try. > I have a VaxStation II/RC, with two 4 Meg memory boards. I want to > replace one of these with an 8 Meg memory board. Once I do, do I > need to rebuild Ultrix again, or can I simply turn it on after > that? At least for ULTRIX V4.x and V3.x there was only interesting value for physmem in the configuration file; 64 MB. Under 64 MB the system page table would be sized one way and above that it would be sized another. I think that was the only place it would be used. For documentation purposes it probably wouldn't be a bad idea to update the configuration file, but there's no need to rebuild the kernel. > And, what about the swap space - do I need to make that bigger > to match the bigger memory? If so, how? I would greatly appreciate > any help on the matter. IF your memory usage habits don't change and you're not running out of page/swap space now, it's unlikely you'll run out of page/swap space after adding memory. Hopefully you'll just page less. The problem is that "IF". Once you discover you have the memory to spare, you'll probably find a way to use more. At that point you may find your- self with an "out of core" message and you'll need to config- ure more page/swap space. > > Mike Levin "Applications will expand to consume all available resources." -- Alan Rollow alan@nabeth.cxn.dec.com