As virtualization solutions, Red Hat in recent years began to rely on technology, KVM (Kernel-based Virtual Machine) as the Hypervisor.
With Red Hat's strategy is gradually leaving the Xen technology derived from that previously when RHEL 5 was introduced in March 2007 is still the choice of technology for virtualization solutions.
KVM begin to be considered as a Hypervisor since 2009 when Red Hat released RHEL version 5.4 and true after a company that develops KVM Qumranet was acquired by Red Hat. In connection with the responsibility of maintenance and support for RHEL 5 series, XEN still get support from Red Hat, at least until 2014.
In contrast to XEN, KVM does not support paravirtualisasi and thus KVM function depends strongly on whether the CPU architecture used it already supports virtualization or not.
The performance of guest systems in RHEL 6 which virtualizes using KVM, claimed nearly equal to suppose that the system be run directly (natively) on the same hardware without virtualization. RHEL 6 also provides tools to convert XEN guest systems that are installed on RHEL 5 to be a KVM guest system to run on RHEL 6.
New features RHEL 6 others are Kernel Samepage Merging (KSM). RHEL 6 also provides the drivers to improve operational acceleration of guest systems using KVM, VMware and XEN. The Linux kernel that RHEL-6 packaged using Linux version 2.6.32 as the base.
Compared with built-in Linux kernel 2.6.18 RHEL 5, then clearly RHEL 6 can exhibit a myriad of updates. Among the new features you'll enjoy the Red Hat are features like the Completely Fair Scheduler (CFS), which since the Linux version 2.6.23 is part of the Linux kernel.
Overall default Kernel RHEL 6 promises better scalability which produces better performance improvements, especially for systems using multiple processors with the kind of Multi-Core-CPUs and the large-scale systems. For comparison, a limit on RHEL 5 is 64 cores and 1 TByte RAM.
With Red Hat's strategy is gradually leaving the Xen technology derived from that previously when RHEL 5 was introduced in March 2007 is still the choice of technology for virtualization solutions.
KVM begin to be considered as a Hypervisor since 2009 when Red Hat released RHEL version 5.4 and true after a company that develops KVM Qumranet was acquired by Red Hat. In connection with the responsibility of maintenance and support for RHEL 5 series, XEN still get support from Red Hat, at least until 2014.
In contrast to XEN, KVM does not support paravirtualisasi and thus KVM function depends strongly on whether the CPU architecture used it already supports virtualization or not.
The performance of guest systems in RHEL 6 which virtualizes using KVM, claimed nearly equal to suppose that the system be run directly (natively) on the same hardware without virtualization. RHEL 6 also provides tools to convert XEN guest systems that are installed on RHEL 5 to be a KVM guest system to run on RHEL 6.
New features RHEL 6 others are Kernel Samepage Merging (KSM). RHEL 6 also provides the drivers to improve operational acceleration of guest systems using KVM, VMware and XEN. The Linux kernel that RHEL-6 packaged using Linux version 2.6.32 as the base.
Compared with built-in Linux kernel 2.6.18 RHEL 5, then clearly RHEL 6 can exhibit a myriad of updates. Among the new features you'll enjoy the Red Hat are features like the Completely Fair Scheduler (CFS), which since the Linux version 2.6.23 is part of the Linux kernel.
Overall default Kernel RHEL 6 promises better scalability which produces better performance improvements, especially for systems using multiple processors with the kind of Multi-Core-CPUs and the large-scale systems. For comparison, a limit on RHEL 5 is 64 cores and 1 TByte RAM.
