b_freelist TAILQ/SLIST

[Adrian Chadd]

.. i'd rather you narrow down _why_ it's performing better before committing it.

Otherwise it may just creep up again after someone does another change
in an unrelated part of the kernel.

You're using instructions-retired; how about using l1/l2 cache loads,
stores, etc? There's a lot more CPU counters available.

You have a very cool problem to solve. If I could reproduce it locally
I'd give you a hand.

Thanks,



-adrian