Date: Sat, 24 Jun 1995 19:37:59 -0400 From: dennis@et.htp.com (dennis) To: freebsd-hackers@freebsd.org Cc: davidg@root.com Subject: Re: FreeBSD as a router Message-ID: <199506242337.TAA21743@mail.htp.com>
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Rodney yells.... >> >In dedicated router hardware they use the trick of interrupting >> >the CPU after N bytes have been recieved (N is programmable) so >> >they can actually decide what to do with the packet before it is >> >even completly received. >> > >> > >> This is not necessary to get good throughput, although it wouldn't hurt. You >> can still get 5mbs without this, which is plenty. > >Not when you start looking at 100MB/sec ethernet it isn't!!! Sure 400 to 500 >KByte/sec for 10MB/sec ethernet routing is just fine by me, but as soon as >I reproduce the numbers for 100MB/sec routing you will see what I mean >about we need to make some improvements. > >We need to get that routing performance into the 50MB/sec range and we are >not even close. (I seem to recall about 20MB/sec, but am not sure right >now, too many numbers floating around in my head). > Of course, 5mbs is the upper limit with full frame forwarding on 10mbs media, its 50mbs (1/2 of the bandwidth) with 100mbs media. You ought to know that. Dennis
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