[binarycrusader]

It seems like futexes are really just an alternative interface made to build pthread mutexes on top of. In addition, they may only be faster on Linux because of implementation issues. It doesn't seem worth including for comparison.

Also, I'm confused by the claim that Solaris doesn't have the vfsstat utility; yes, it doesn't have that utility, but it does have "fsstat" which provides VFS-level statistics. So it'd be helpful to see a more detailed comparison.