Re: [patch V3] percpu_counter: scalability works
From: Eric Dumazet
Date: Tue May 17 2011 - 09:00:34 EST
Le mardi 17 mai 2011 Ã 14:45 +0200, Tejun Heo a Ãcrit :
> Given that _sum() is super-slow path and we have a lot of latitude
Absolutely not. Its slow path yes, but not super-slow.
Dont change rules now ;)
Take a look at include/net/tcp.h and commit ad1af0fedba14f82b
(tcp: Combat per-cpu skew in orphan tests.)
If you guys make percpu_counter much slower, we'll just remove its use
in network stack, and there will be not a lot of users left.
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