Hello, I am new to Xen virtualisation. I am wondering how do you figure out how much CPU speed each guest has? Do you just divide the native host CPU speed by the number of guests? So a 2Ghz machine with 4 guests, would each get around 500Mhz performance? Is there any way to measure CPU speed on the guest domains? Cheers, -- Conor _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Conor Deering:> Is there any way to measure CPU speed on the guest domains?It''s sometimes hard to do - you may want to read ftp://download.intel.com/technology/itj/2006/v10i3/v10-i3-art07.pdf http://www.cl.cam.ac.uk/research/srg/netos/xen/performance.html and maybe http://www.vmware.com/pdf/vmmark_intro.pdf J. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Thanks J Those are interesting documents. I was thinking of running a SPECint test on the domU''s - but it seems a bit overkill. I am just looking for a general rule of thumb argument. Is the host CPU speed split and enforced equally over all VM guests? If so, host VPS speed should just be dom0speed / n ? Eg: 2 GHz/4 vms - 500 MHz each? -- Conor _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users