Date: Sat, 24 Jun 1995 00:58:03 +0300 From: Heikki Suonsivu <hsu@cs.hut.fi> To: terry@cs.weber.edu (Terry Lambert) Cc: freebsd-hackers@freefall.cdrom.com Subject: Re: FreeBSD as a router Message-ID: <199506232158.AAA00252@shadows.cs.hut.fi> In-Reply-To: terry@cs.weber.edu's message of 23 Jun 1995 05:30:12 %2B0300
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From: terry@cs.weber.edu (Terry Lambert)
I suspect there are bottlenecks everywhere.
You can probably start with linear traversal of the routing table
and non-seperate reader/writer locks coupled with a lack of kernel
preemption.
Its not CPU or bus performance problem, if there is no performance
difference between a 386-40 and a 486-66. And both route at 400kB/s, at
least with SMC 8013s onboard. Straight machine-machine throughput is
800-900kB/s. I understood that SMC's can't have more than one outgoing
packet at a time which would be a good excuse, but how about better boards
on PCI bus which can have multiple packets going both ways without CPU
intervention?
--
Heikki Suonsivu, T{ysikuu 10 C 83/02210 Espoo/FINLAND,
hsu@cs.hut.fi home +358-0-8031121 work -4513377 fax -4555276 riippu SN
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