Is this correct? I have 4 real processors. My guest (although it maybe able to handle multiple cpu's) has only 1 vCPU defined to it. The guest can process at 100% CPU ... BUT this is actually 25% of the total LPAR. Next I define 2 vCPU's to the guest and it runs at 100% it is now using 50% of the total real.
Is that correct? -----Original Message----- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] Behalf Of Alan Altmark Sent: Friday, March 23, 2007 2:42 PM To: [email protected] Subject: Re: CPU usage -- virtual or dedicated ? On Friday, 03/23/2007 at 12:29 MST, "Schuh, Richard" <[EMAIL PROTECTED]> wrote: > Isn't it "CMS Multitasking" and not "CMS" that uses multiple cpus? It is > a fine point of distinction, but I cannot run multiple concurrent > programs under CMS and have instances of simultaneous execution of two > or more of them without going beyond basic CMS to CMS Multitasking. It > is a different operating system. If the question is "Does CMS, in general, let me run two programs concurrently?" the answer is "No". If the question is "Can CMS use more than one CPU?" the answer is "Yes". There's no difference between "CMS" and "CMS Multitasking". The latter is just our name for the set of APIs that enable you to create a multi-threaded CMS application that can take advantage of multiple CPUs. CMS' POSIX support is built on top of it. CMS Multitasking is most definitely NOT a separate operating system. Alan Altmark z/VM Development IBM Endicott __________________________________________________________________ << ella for Spam Control >> has removed VSE-List messages and set aside VM-List for me You can use it too - and it's FREE! http://www.ellaforspam.com
