Linux and Scalability.
Linux scales just nicely.
Number 2, 3, 4 and 5 are LINUX submissions. And that is on 3 different processor architectures. So saying Linux doesn't scale is simply not correct, I actually think it's pretty impressive to be in the top on so many different processor architectures.
Also notice that the fastest Linux submission has almost 4 times the throughput of the fastest Solaris submission.
Or what about Java, a place where Oracle owns the whole stack.
Best Linux submission is 20,499,538@256 Cores the best SPARC result is 1,757,035@256 Cores. (http://www.spec.org/osg/jbb2005/results/res2008q4/jbb2005-20081027-00552.html)
Now that is almost a factor of 12 in throughput.. read my lips NO MORE TAX.. I mean sorry.. It's still early and I haven't finished the fist cup of Mokka.
And please don't start with that it is the number of threads that counts.. The linux JBB2005 submission uses 1024 threads vs the 512 of the Solaris on SPARC submission.