RedHat just announced the release of RedHat Enterprise Linux 5.3 which is available for immediate download from Red Hat Network. According to the company, with this update to Red Hat Enterprise Linux 5, customers will receive a wide range of enhancements, including significantly increased virtualization scalability.
RedHat lists Increased scalability of virtualized x86-64 environments as it’s prominent new feature:
“This includes the industry-leading ability to support virtual servers with up to 32 virtual CPUs and 80GB of memory. Physical server limits have also been expanded to match the size of today’s latest hardware systems, with up to 126 CPUs and 1TB main memory. New features, such as support for Hugepage memory and Intel Extended Page Tables (EPT), dramatically improve the performance of virtual servers. For customers, these enhancements allow more and larger virtual systems to be configured on today’s powerful servers, thereby reducing costs. Additionally, more devices can be allocated to each virtual server (guest), enabling the virtualization of applications with heavy I/O requirements. ”
Amongst other improvements is support for the Quad Core Intel Core i7 (Nehalem) processors and the inclusion of OpenJDK
More info including a Video on their blog.