James Melin wrote:
What is the memory footprint requirement for a default installation of SuSE 8 to come up? real and swap of how much? We're trying to tell management how much overhead in memory/swap space the Linux operatingsystem itself requires in order to initialize and be ready to do work. This to separate our overhead costs from billable items.
I see someone mentioned a 32 MB linux system. What all was installed on that system? Does anyone have a minimal system configuarion, package wise, that they recommend to install?
Virtual machine size is something else than memory footprint of the Linux server. With VDISK and EW shared segments you can grow a footprint beyond the virtual machine size, but in most cases you will find that you can get away with only part of the virtual machine resident. The default SLES8 install includes all kind of extra packages that you may not need and demands a large virtual machine only to install the code. Using NSS to hold the kernel or DCSS to hold userspace code is going to help you a lot if that works for you. Have a look at my presentation for some ideas. http://www.vm.ibm.com/events/nl76.pdf Until there is memory pressure on z/VM, you will not be able to predict with how much memory you could get away. I certainly have been running complete running web servers with only a few MB per virtual machine.
Rob
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