[Orva]

In NUMA front Linux is, as far as I know, leaps and bounds ahead of FreeBSD, Solaris and Windows. All four platforms offer ways to tune process and memory allocations by hand, but Linux is only platform that puts lot of work to make automatic NUMA scheduling actually work. It is actually pretty difficult problem. Something to read if you are interested:

http://queue.acm.org/detail.cfm?id=2513149 http://lwn.net/Articles/591995/ http://lwn.net/Articles/568870/