> 
> Greetings
> 
> I am running NetBSD 1.3.2 on P6 machine with en ATM interface.
> When I do a ttcp test between two such machine thru an ATM switch
> with OC3 connection, I get only about 4MB/s throughput in average,
> which is about 32Mb/s.  
> 
> Can I get higher throughput than this?  Is that kernel overhead
> cause this?

You should use more buffers (-b option). I get ~13MB/s with TCP.

-- 
Zdenek Salvet                                              salvet@ics.muni.cz 
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           If God had meant for us to be in the Army,
         we would have been born with green, baggy skin.