Installation guide

3 Select Hyperthreading Sharing Mode from the drop-down menu.
Option Description
Any
(default) The virtual CPUs of this virtual machine can freely share cores with
other virtual CPUs of this or other virtual machines.
None
The virtual CPUs of this virtual machine have exclusive use of a processor
core whenever they are scheduled to it. The other hyperthread of the core is
halted while this virtual machine is using the core.
Internal
On a virtual machine with exactly two virtual processors, the two virtual
processors are allowed to share one physical core (at the discretion of the
host scheduler), but this virtual machine never shares a core with any other
virtual machine. If this virtual machine has any other number of processors
other than two, this setting is the same as the None setting.
4 Select to schedule affinity by selecting the Run on processor(s) button.
NOTE This option is not allowed when the virtual machine resides on a DRS cluster, and its values are
cleared when a virtual machine is migrated to a new host. The value of the option is only in tuning the
performance of a precise set of virtual machines on the same host.
The check boxes for the individual processors represent physical cores if hyperthreading is disabled or
logical cores (two per physical core) if hyperthreading is enabled. Checking all the boxes is the same as
not applying any affinity. You must provide at least as many processor affinities as the number of virtual
CPUs in the virtual machine.
5 Click OK to save your changes.
The Virtual Machine Properties dialog box closes.
Memory Resources
The Memory Resources panel lets you allocate memory resources for a virtual machine and specify
reservations, limits, and shares.
You can edit some of the same information on the Resource Pools tab of the main vSphere Client window,
which you might do to edit resource settings at the same time as other virtual machine settings.
Change the Memory Settings of a Virtual Machine
You can select a relative metric for allocating memory to all virtual machines on a host.
Procedure
1 Click the Resources tab.
2 Select Memory in the Settings list.
3 From the drop-down menu in the Resource allocation panel, select a relative metric for allocating memory
to all virtual machines.
Symbolic values Low, Normal, High, and Custom are compared to the sum of all shares of all virtual
machines on the server and, on an ESX host, the service console. Share allocation symbolic values can be
used to configure their conversion into numeric values.
4 In the Resource allocation panel, use the slider to select the amount of reserved memory and the memory
limit, or use the up and down arrows to enter the number of MBs allocated.
For more information on memory values, see the mem man page.
5 Click OK to save your changes.
The Virtual Machine Properties dialog box closes.
Chapter 13 Virtual Machine Configuration
VMware, Inc. 157