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Date: Sun, 14 Dec 2003 11:28:12 +0700
From: Eugene Grosbein <eugen@www.svzserv.kemerovo.su>
To: Luigi Rizzo <rizzo@icir.org>
Message-ID: <20031214042812.GC2249@svzserv.kemerovo.su>
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	<20031213101706.A79791@xorpc.icir.org>
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cc: 'DrumFire' <dpphln@tin.it>
cc: net@freebsd.org
Subject: Re: how to saturate 100Mbit
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On Sat, Dec 13, 2003 at 10:17:06AM -0800, Luigi Rizzo wrote:

> the fxp has a problem which does not allow it to go above 103/110/120kpps
> depending on which descriptor model you use, no matter how fast
> the CPU is.

Can you explain the problem, please?

> Even not using any special kernel modules, a simple loop over
> a sendto() on a udp socket can achieve around 500kpps on a 2.4GHz
> box (em or bge). With some tricks and a sufficiently fast PCI
> bus you can reach some 750kpps but then it really depends
> on how fast is your PCI bus.

100*1024*1024/8/1500=8738.1(3)

It seems one does not need hundred of thousand pps to achive 100Mbps.

EUgene