What would you recommend for xen host server? Does xen use advatages of dual core / dual cpu? Whats your recomendations? Thank you Peter Braun _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
John Nowak wrote:> What would you recommend for xen host server? > > Does xen use advatages of dual core / dual cpu? > > Whats your recomendations?All based on what your requirements and monetary limitations are. If you''re building a system for home, I recommend the low-end Core Duo processor which sports dual processors that Xen will happily take advantage of. If you''re building a system for work with no budgetary constraints, I''d recommend the Pentium Extreme 965 which sports 4 logical processors. Couple that with 8GB of DDR2 PC5300 memory and you''ll have a hot little box that will comfortably run a handful of operating systems with ease. The language we use at work when talking about processor counts, by the way, is sockets, chips, and cores. Sockets refers to the physical receptacle for a chip. I.e., a motherboard has a number of sockets. In each socket is placed a chip. Chips have a number of cores. So, with dual core chips you would have two cores per socket. Then, you might state that a motherboard has dual socket support. And if you can put dual core chips in each of two sockets, you''d have a four core or four way machine. And, if each of those cores supports hyperthreading (as in the case of the Pentium Extreme Edition 955 & 965), you''d have effectively an 8 way machine (but still just a 4 core system). Whew! :-) And, yes, Xen will gladly utilize all of the available CPU resources. What was it you wanted out of all of this? ;-) -- Randy _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Mark Williamson
2006-Mar-28 23:06 UTC
Re: [Xen-users] Single core - dual core - dual cpu ?
> What would you recommend for xen host server? > > Does xen use advatages of dual core / dual cpu?Xen is SMP-capable, so are guest OSes. So multiple CPUs will work fine.> Whats your recomendations?Multiple CPUs give you more raw horsepower. If you give domain 0 a CPU of its own it''ll maximise CPU performance, but it''s not actually necessary to do so unless your IO load is very high (e.g. high rate small network packets on GigE) Hyperthreading improves IO performance on a single CPU box (and possibly for domains sharing a CPU with dom0 in an SMP box - I''ve never checked) because it allows dom0 to run concurrently with the domUs its servicing. For many workloads you''ll probably find IO not a big issue anyhow. Cheers, Mark -- Dave: Just a question. What use is a unicyle with no seat? And no pedals! Mark: To answer a question with a question: What use is a skateboard? Dave: Skateboards have wheels. Mark: My wheel has a wheel! _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users