Re: Linux Routing Performance inferior?

[Nathan Bryant]

William Stearns wrote:
> Good afternoon, Ram,
>
> On Wed, 8 Sep 2004, Ram Chandar wrote:
>
>
> > Quoted from a recent mail to freebsd mailing list.
> >
> > "FreeBSD (5.x) can route 1Mpps on a 2.8G Xeon while
> > Linux can't do much more than 100kpps"
> >
> > http://lists.freebsd.org/pipermail/freebsd-net/2004-September/004840.html
> >
> > Is this indeed the case?
>
>
> 	I'm sure others here have far better examples, but one post to the 
> netfilter-devel list last December provided an example of a firewall that 
> could process 580kpps with netfilter/conntrack turned off.  Granted, the 
> post noted that adding netfilter brought that down to 450kpps, and adding 
> conntrack on top of that brought it down to 295kpps, but all three of 
> those numbers are well over the claimed 100kpps.

Nonetheless, FreeBSD has some advantages. They achieved their results 
using a fast forwarding path (enabled via sysctl) that processes 
forwarded packets to completion entirely within the interrupt handler.
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