Date: Tue, 26 Oct 1999 21:11:52 -0700 From: Jason Thorpe <thorpej@nas.nasa.gov> To: itojun@iijlab.net Cc: jayanth <jayanth@yahoo-inc.com>, Alex Rousskov <rousskov@ircache.net>, freebsd-net@FreeBSD.ORG Subject: Re: TCP throughput vs number of aliases Message-ID: <199910270411.VAA08719@lestat.nas.nasa.gov>
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On Wed, 27 Oct 1999 09:56:57 +0900
itojun@iijlab.net wrote:
>
> >The code in ip_input.c seems to step through the list of all
> >ip addresses for that interface. It is probably stepping thro' all the
> >alias addresses
> >I wonder if that is the problem.
>
> One possible solution for this is implemented in KAME IPv6 stack,
> for IPv6 only. We may want to port that part to IPv4 if it is common
> to have more than 500 interface addresses onto a host.
Thor Simon solved this problem in NetBSD quite some time ago by putting
in_ifaddrs in a hash table. His application was, in fact, a web server
with hundreds of IP addresses.
-- Jason R. Thorpe <thorpej@nas.nasa.gov>
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