On: Red Hat Enterprise Linux 6 now available

[riffraff]

is memory deduplication the KSM thingy released about a year ago?

http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.3...

[rwmj → riffraff]

Yes. In fact KSM can be used on any Linux process although you have to mark the regions that can be merged with a special mmap flag. It works well with VMs because they basically mmap a huge chunk of sequential memory (for the VM's RAM) which is marked thus.

Edit: madvise, not mmap.

[amitshah → riffraff]

Yes.