Woeful NIC transfer speeds.

[Net Llama!]

Are you seeing any errors on the interface (ifconfig)?

On Wed, 10 Sep 2003, James McDonald wrote:
> I have a problem with my network transfer speeds outgoing on my linux
> box
>
> This is the transfer speed from a laptop to my linux box.
>
> ttcp -r -s -f m
> ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001  tcp
> ttcp-r: socket
> ttcp-r: accept from 192.168.2.7
> ttcp-r: 16777216 bytes in 14.92 real seconds = 8.58 Mbit/sec +++
> ttcp-r: 11727 I/O calls, msec/call = 1.30, calls/sec = 785.91
> ttcp-r: 0.0user 0.2sys 0:14real 1% 0i+0d 0maxrss 0+2pf 0+0csw
>
> This is the transfer from the linux box to a laptop
>
> ttcpw -r -s -f m
> ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001  tcp
> ttcp-r: socket
> ttcp-r: accept from 192.168.2.6
> ttcp-r: 1022872 bytes in 161.49 seconds = 0.05 Mbit/sec +++
> ttcp-r: 310 I/O calls, msec/call = 533.44, calls/sec = 1.92
> ttcp-r:
>
> note the transfer rate 8.58 Mbit/sec +++ for the laptop --> linux box
> note the transfer rate 0.05 Mbit/sec +++ for the linux box --> laptop
>
> Now for the above tests I was using the embedded via-rhine lan adaptor on
> an ASrock motherboard this is a 2 month old motherboard using 512MB RAM
> and an Athlon 1GHz chip.
>
> Changing to a 8139too PCI card has given me 1.5MB/s both ways.
>
> Can anyone tell me what sort transfer speeds that I should be getting. I
> would like to change out all my NIC's so that i get somewhere near the
> advertised 100MB/s speeds....
>
> Cheers
> James
>

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Lonni J Friedman				netllama at linux-sxs.org
Linux Step-by-step & TyGeMo		     http://netllama.ipfox.com