This, theoretically, increases maximum physical memory size from 4 GB to 64 GB. X86 processor hardware architecture is augmented with additional address lines used to select the additional memory, so physical address size is increased from 32 bits to 36 bits. PAE is provided by Intel Pentium Pro (and above) CPUs. RHEL 32 bits memory management PAE In computing, Physical Address Extension (PAE) is a feature of some x86 and x86-64 processors that enables the use of more than 4 gigabytes of physical memory to be used in 32-bit systems - given appropriate operating system support. If all machines in the cluster are 64-bit, the

Note: If there are any 32-bit machines in the cluster, the maximum gfs file How do I create an ext3 filesystem greater than 8T on RHEL 5? How can I create filesystems greater than 2 Terabytes in RHEL 5? The following articles give more information how to do it: This enhancement was originally included in RHEL 5 as a Technology Preview, and is fully supported in update 5.1. Note: The maximum capacity of the EXT3 is 16TB (increased from 8TB) in RHEL 5. hugemem kernel supports 64 GB of physicalĪdditionally, in certain workload scenarios it may beĪdvantageous to use the 'hugemem' kernel on systems with more than 12GB.Note: with RHE元 or RHEL4 and i386 architecture: Multi-core/thread processor is a logical CPU Subject to change as on-going testing completes.ĬPU as any schedulable entity. Limited explicitly by the subscription terms. Provided by any Red Hat Enterprise Linux subscription if not otherwise Testing by Red Hat and its partners, and set the upper limit of support Certified limits: reflect the current state of system Note: Two numbers indicate the certified and theoretical Red Hat defines physical CPUs equivalently to sockets, so a multi-coreĪnd/or hyperthreading CPU is counted as a single socket whenĭetermining which subscription to purchase

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