[Xen-API] CloudLinux on Xen

R J
Mon, 24 Oct 2011 16:05:26 -0000

Hello List,

I am testing a XCP1 CentOS 5 paravirt vm with CloudLinux.
http://cloudlinux.com/
CloudLinux is a great product for shared hosting and I was evaluation same
on a paravirt guest.

I found a strange thing in XCP. CloudLinux provides xen kernel for DomUs and
after installing the CloudLinux in a DomU it actually got 32 cpus inside.
I had assigned only 2 vCPU to that DomU. To confirm this I started
generating load on that DomU and in no time it ate all my node''s CPUs.

Is it an expected behavior that one of your DomU can eat all node with few
modifications in kernel ?
Or is Paravirt not a Hardware Virtualized guest ?