Hi All, This is confusing me for a while: I am having Intel E5620 which is having *4 cores* and *8 threads*. I am running *3* VMs lets say *vmA vmB vmC* on it using *xen 4.1.2* on ubuntu 12.04 dom0. . As from the best practices i decided to assign each vm''s cpu to physical core and also to give *vmB *higher Weight in Credit-scheduler since its running Mysql server(*I/O intensive*). from *cat /proc/cpuinfo* its showing *8 CPU. D*oes that mean that i can assign each vm 2 cpu each(2*3=6) and assign two cpu to Dom0(2*1=2) and thus utilizing 8cpus(6+2). like this: *VM* *xm vcpu-pin vmA 0 0* *xm vcpu-pin vmA 1 1* *xm vcpu-pin vmB 0 2* *xm vcpu-pin vmB 1 3* *xm vcpu-pin vmC 0 4* *xm vcpu-pin vmC 1 5* * * *Dom0 * *xm vcpu-pin Domain-0 0 6* *xm vcpu-pin Domain-0 1 7* After setting this do we still need to Increase Weight for *vmB *after assigning dedicated CPU. Regards, Kevin.Parker _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users