[Xen-devel] Dom0 cpu utilisation irregularly distributed

[Fantu <fantonifabio@xxxxxxxxxx>]

On some production servers with dom0 kernel 2.6.32 pvops and xen 4.0 and
domus mainly windows with gplpv I noticed a strange cpu usage by the dom0
mainly with the use of a single cpu, for example this take from one server:
xm vcpu-list
Name                                ID  VCPU   CPU State   Time(s) CPU
Affinity
...
Domain-0                             0     0     3   -b-  1043377.5 any cpu
Domain-0                             0     1     2   r--  122083.9 any cpu
Domain-0                             0     2     0   -b-  284636.1 any cpu
Domain-0                             0     3     1   -b-   80772.9 any cpu
...
Note the increased utilisation on the vcpu 0

Domus cpu utilisation apparently successfully distributed but the dom0 has
always use more of its vcpu 0
Is this correct or there are bugs on kernel and/or xen?



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