b_freelist TAILQ/SLIST

Konstantin Belousov kostikbel at gmail.com
Fri Jun 28 15:58:02 UTC 2013


On Fri, Jun 28, 2013 at 08:14:42AM -0700, Adrian Chadd wrote:
> .. 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.
Or penalize some other set of machines where this is currently not a problem.

The cause should be identified before any change is committed.
> 
> 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
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