netdev - Re: [RFC] net: further seperate dst_entry._

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Message-Id: <20120720.132934.854459589738348753.davem@davemloft.net>
Date:	Fri, 20 Jul 2012 13:29:34 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	nzimmer@....com, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, Robin.Holt@....com
Subject: Re: [RFC] net: further seperate dst_entry.__refcnt from cache
 contention

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Fri, 20 Jul 2012 22:16:51 +0200

> Another idea concerning very hot dst would be to clone them on demand.

The FIB info cached dsts could also be made per-cpu.

And yes, the only reason I'm entertaining that idea now is the fact
that we'll have the number of dsts in the system under control.
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