Re: [Xen-users] kernel-xen can not recognize more than 32 cores

[Kevin Maguire <kmaguire@xxxxxxx>]

Hi

> > I've installed xen hypervisor 3.0.3 on CentOS 5.5 from CentOS repository.
> > The hardware I use is a Tyan server with 48 cores( 4*12-cores processors ).
> > The original CentOS kernel 2.6.18.194 can recognize 48 cores perfectly, but
> > when I switch to another kernel to use xen, the kernel recognize only 32
> > cores!
What do you mean by "another kernel" there - CentOS 5.5 supply a -xen 
kernel themselves, no?
And just to check, your "new" kernel is compiled for 64 bit, and not 32 
bit - 'uname -i' outputs x86_64 - as 32 bit kernel cannot use more than 32 
CPUs.
Last, I beleive the 3.0.3 version is a bit misleading, as CentOS follow 
RedHat and RedHat's xen 3.0.3 will likely have a lot of patches applied to 
it and be some way on from a vanilla Xen 3.0.3.  Check the src.rpm for 
this.
Kevin


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