We did take a look a few years ago. Of course, pure MCS locks have an incompatible API, but
the K42 folks at IBM Research came up with a variant of MCS locks that matched the
Linux-kernel spin_lock() primitives. If I remember correctly, MCS locks outperformed the
various NUMA-aware locking primitives, but were outperformed by simple spinlocks.
I would expect that ticket locks would out-perform MCS locks at low contention levels (the
common case in modern Linux kernels). I am not sure how MCS locks and ticket locks would
compare at high levels of contention -- the ticket locks avoid the "thundering herd" problem,
so might do quite well.
Any benchmark results out there?