Xu nanxuan
2008-Aug-27 19:38 UTC
[Xen-users] What is the relation between Xen and the number of CPU?
I have a physical box with two cores, then: If I concurrently have two Win XPs as DomU, how many physical cores are used? Is each one core responsible for each DomU? or only one core is used to manage two DomUs? Thanks! _________________________________________________________________ Discover the new Windows Vista http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Jan Marquardt
2008-Aug-28 12:29 UTC
Re: [Xen-users] What is the relation between Xen and the number of CPU?
Hi, with default settings both physical cores are used. The allocation changes during runtime. So you can''t say that domU1 is always on core1 and domU2 always on core2. With `xm vcpu-list` you can check the current allocation of domU to cpu core. Regards, Jan Marquardt Xu nanxuan wrote:> I have a physical box with two cores, then: If I concurrently have two Win XPs as DomU, how many physical cores are used? Is each one core responsible for each DomU? or only one core is used to manage two DomUs? > > Thanks! > _________________________________________________________________ > Discover the new Windows Vista > http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE > > > ------------------------------------------------------------------------ > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Yves-Gaël Chény
2008-Aug-29 03:03 UTC
Re: [Xen-users] What is the relation between Xen and the number of CPU?
Hi, if you don''t specify to xen tu use 1 (or more) core for 1 DomU, the hypervisor use a sheduler to manage the priority for domU to use the available processing time. I expect that the default is the Credit Sheduler. regard yves Xu nanxuan a écrit :> I have a physical box with two cores, then: If I concurrently have two > Win XPs as DomU, how many physical cores are used? Is each one core > responsible for each DomU? or only one core is used to manage two DomUs? > > Thanks! > > ------------------------------------------------------------------------ > Discover the new Windows Vista Learn more! > <http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE> > ------------------------------------------------------------------------ > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users