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Date:      Thu, 09 Dec 2004 16:34:52 +0100
From:      Andre Oppermann <andre@freebsd.org>
To:        Ruslan Ermilov <ru@FreeBSD.org>
Cc:        src-committers@FreeBSD.org
Subject:   Re: cvs commit: src/sys/netinet in_gif.c
Message-ID:  <41B8709C.329DD195@freebsd.org>
References:  <200412061902.iB6J2hJ6000543@repoman.freebsd.org> <x7fz2i7la1.wl%suz@crl.hitachi.co.jp> <41B58367.EB32CF1@freebsd.org> <20041207150937.GD1336@ip.net.ua>

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Ruslan Ermilov wrote:
> 
> On Tue, Dec 07, 2004 at 11:18:15AM +0100, Andre Oppermann wrote:
> > I hope to remove the ability to have pointers into the routing table
> > before 6.0 release.
> >
> This would make my WIP OBE, which is nice.  But how are you going to
> compensate for the performance loss of *not* having cached routes?

Up to a couple of hundred kpps it doesn't matter and the only place
where we have cached routes is in the various IP[46] tunnels.  The
caching makes locking of the routing table more complex and expensive.
Once that can be simplified there is a significant amount of lookup
cost going away.

-- 
Andre



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