Installation guide

Note
For more information on KSM, refer to the Red Hat Enterprise Linux 6 Virtualization
Administration Guide.
Q EMU G u est Ag en t
The QEMU Guest Agent runs on the guest operating system and allows the host machine to
issue commands to the guest operating system.
Note
For more information on the QEMU Guest Agent, refer to the Red Hat Enterprise Linux 6
Virtualization Host Configuration and Guest Installation Guide.
Hyp er- V En lig h t en men t
KVM in Red Hat Enterprise Linux 6.5 implements several Hyper-V compatible functions that
are used by Windows guests to improve performance and stability, allowing Windows
guests to perform as if they were running on a Microsoft Hyper-V hypervisor.
Note
For more information on Hyper-V Enlightenment, refer to the Red Hat Enterprise Linux 6
Virtualization Host Configuration and Guest Installation Guide.
Disk I/O t h ro t t lin g
When several virtual machines are running simultaneously, they can interfere with system
performance by using excessive disk I/O. D isk I/O throttling in KVM provides the ability to
set a limit on disk I/O requests sent from virtual machines to the host machine. This can
prevent a virtual machine from over utilizing shared resources, and impacting the
performance of other virtual machines.
Note
For instructions on using disk I/O throttling, refer to the Red Hat Enterprise Linux 6
Virtualization Tuning and Optimization Guide.
KVM g u est virt u al mach in e co mp at ib ilit y
To verify whether your processor supports the virtualization extensions and for information
on enabling the virtualization extensions if they are disabled, refer to the Red Hat Enterprise
Linux 6 Virtualization Administration Guide.
Red Hat Enterprise Linux 6 servers have certain support limits.
The following URLs explain the processor and memory amount limitations for Red Hat
Enterprise Linux:
⁠Chapt er 4 . Int roduct io n t o Red Hat virt ualizat ion product s
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