Subject: Re: Network throughput using en ATM interface
To: Ruibiao Qiu <>
From: Zdenek Salvet <>
List: tech-net
Date: 07/27/1998 09:25:28
> 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                                     
           If God had meant for us to be in the Army,
         we would have been born with green, baggy skin.