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Subject: z/VM 5.1 CPU Utilization
We are looking at upgrading from z/VM 4.3 to supported z/VM
5.1. Because z/VM 5.1 will not run on our 9672-x27, we will have to upgrade
boxes first. We need to choose a new box based on what capacity we will be
needing. We are aware
Tim, the biggest change from a CPU perspective would be the
removal of V=R and V=F support. See
http://www.vm.ibm.com/perf/tips/z890.html for some background.
z/VM 5.2 did have significant changes in the area of memory management.
However, since you were on a 31-bit addressing machine (9672) the
We are looking at upgrading
from z/VM 4.3 to supported z/VM 5.1. Because z/VM 5.1 will not run on our
9672-x27, we will have to upgrade boxes first. We need to choose a new box based
on what capacity we will be needing. We are aware of several
changestoz/VM between versions (i.e. 64 bit
Tim Joyce wrote:
We are looking at upgrading from z/VM 4.3 to supported z/VM 5.1.
Because z/VM 5.1 will not run on our 9672-x27, we will have to upgrade
boxes first. We need to choose a new box based on what capacity we
will be needing. We are aware of several changes to z/VM between
I absolutely concur that you should be looking at z/VM 5.2.
The detail of release to release performance changes are at:
http://www.vm.ibm.com/perf/changes/
With measurements in the performance report, which is a link at the bottom of
the page.
On Monday 29 May 2006 12:39 pm, Tim Joyce wrote:
