6.0

Change the Number of Virtual CPUs in the VMware Host Client
You can change the number of virtual CPUs while your virtual machine is powered o. If virtual CPU
hotplug is enabled, you can increase the number of virtual CPUs while the virtual machine is running.
Virtual CPU hot add is supported for virtual machines with multicore CPU support and ESXi 5.0 and later
compatibility. When the virtual machine is turned on and CPU hot add is enabled, you can hot add virtual
CPUs to running virtual machines. The number of CPUs that you add must be a multiple of the number of
cores that exist on each socket.
I When you congure your virtual machine for multicore virtual CPU seings, you must ensure
that your conguration complies with the requirements of the guest operating system EULA.
Prerequisites
n
If virtual CPU hot add is not enabled, turn o the virtual machine before adding virtual CPUs.
n
To hot add multicore CPUs, verify that the virtual machine is compatible with ESXi 5.0 and later.
n
Verify that you have the Virtual Machine..Change CPU Count privilege.
Procedure
1 Click Virtual Machines in the VMware Host Client inventory.
2 Right-click a virtual machine in the list and select Edit  from the pop-up menu.
3 On the Virtual Hardware tab, expand CPU, and select the number of cores from the CPU drop-down
menu.
4 Select the number of cores per socket from the Cores Per Socket drop-down menu.
5 Click Save.
Allocate CPU Resources in the VMware Host Client
To manage workload demands, you can change the amount of CPU resources allocated to a virtual machine
by using the shares, reservations, and limits seings.
A virtual machine has the following user-dened seings that aect its CPU resource allocation.
Limit
Places a limit on the consumption of CPU time for a virtual machine. This
value is expressed in MHz or GHz.
Reservation
Species the guaranteed minimum allocation for a virtual machine. The
reservation is expressed in MHz or GHz.
Shares
Each virtual machine is granted CPU shares. The more shares a virtual
machine has, the more often it receives a time slice of a CPU when there is no
CPU idle time. Shares represent a relative metric for allocating CPU capacity.
Prerequisites
Power o the virtual machine.
Procedure
1 Click Virtual Machines in the VMware Host Client inventory.
2 Right-click a virtual machine in the list and select Edit  from the pop-up menu.
vSphere Single Host Management - VMware Host Client
52 VMware, Inc.