- KVM scalability enhancements increasing the maximum supported virtual guest size from 128 to 256 virtual CPUs furthering the reach of virtualization deployments to large-scale workloads.
- The spice-client package now adds support for Red Hat Enterprise Virtualization 3.0 and Red Hat Enterprise Linux 6.2 hosts. These improvements also allow users to access their desktop virtual machines over a WAN connection in addition to the local network.
- KVM enhancements include improved guest boot times and improved clock and timer support. The KVM hypervisor has updated real time clock (RTC) support to improve the performance of Red Hat Enterprise Linux 6 guests on Red Hat Enterprise Linux 5 KVM hosts.
- Additional KVM improvements increase the manageability and stability of KVM hosts and Red Hat Enterprise Linux guests. Many of these enhancements are in support of Red Hat Enterprise Virtualization 3.0.
- Xen enhancements provide improved guest performance, improved logging for debug, and virtual disk re-sizing while a guest is running.
Hardware Support and Streamlined Installation
- Support for Power Management Quality of Service (QoS) provides automatic power management at the device level for managing latency and throughput based on QoS needs. During critical production windows, system administrators can enforce a high-performance, low-latency mode.
- New iotop support enables the monitoring of I/O resources, such as storage devices, at the process level, providing insight into potential performance issues.
- PCI-e 3.0 enablement provides support for new and emerging PCI-e 3.0 adapters.
- Network, storage and graphic driver enhancements for recent hardware.
- The configuration of IP over Infiniband (IPoIB) adapters is now supported by the system installer, making installation of Infiniband adapters easier.
- OpenSCAP (Open Security Content Automation Protocol) support is now compliant with the SCAP 1.1 (Security Content Automation Protocol) specification, the most recent standard framework defined by National Institute of Standards and Technology (NIST) for creating a standardized approach for maintaining secure systems.
- Red Hat Enterprise Linux 5 has been tested to the United States Government Configuration Board (USGCB) baseline and now meets the USGCB recommendations for government agencies following USGCB guidance for secure configuration policies.
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