Linux guests under secondlevel z/VM would incurr high CPU overhead, 50% for example. The current z series supports 2 layers of virtualization. LPAR uses the first layer, a z/VM guest the second. These days a secondlevel z/VM is in fact 3'th level, what means simulation.
2008/8/28 Huegel, Thomas <[EMAIL PROTECTED]>: > Are you saying you want to run a second level production z/VM? Why? > > -----Original Message----- > From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] > Behalf Of Duane Weaver > Sent: Thursday, August 28, 2008 9:52 AM > To: [email protected] > Subject: VM size for a 2nd level VM > > > Are there any guidelines for assigning virtual machine size to a 2nd > level VM system that will run a few Linux guests? > > I am running a standard zVM 5.2 system with the usual service > machines. It is also running a ZOS guest with 500m virtual machine > size and another ZOS guest with 1024m machine size. > > The cpu is a z800 running 1 lpar of zVM. > -- Kris Buelens, IBM Belgium, VM customer support
