From owner-freebsd-hackers@FreeBSD.ORG  Fri Jun 28 15:14:43 2013
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Date: Fri, 28 Jun 2013 08:14:42 -0700
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Subject: Re: b_freelist TAILQ/SLIST
From: Adrian Chadd <adrian@freebsd.org>
To: Alexander Motin <mav@freebsd.org>
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Cc: Konstantin Belousov <kostikbel@gmail.com>, hackers@freebsd.org
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.. 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