[PLUG] Incredibly Slow scp Across Local Ethernet

Wil Cooley wcooley at nakedape.cc
Mon Jan 12 17:26:02 UTC 2004


On Mon, 2004-01-12 at 17:20, Paul Mullen wrote:
> On Fri, Jan 09, 2004 at 02:21:42PM -0800, Kyle Hayes wrote:
> > 
> > I know several people who've seen this.  If the driver is a module, try 
> > rmmod-ing the driver and reinserting it.  If that causes data to flow for a 
> 
> This didn't seem to work for me. Am I supposed to be able to rmmod the
> driver while it's being used? rmmod complained the module was busy.

You'll need to bring the interface down first, with 'ifconfig ethX
down'.

> > The other case I found was a NIC that would only do 50kB/s upload.  Downloads 
> > were just fine (100mbps).  The odd asymmetry was something I'd never seen 
> ---8<-----
> > Can you determine if the problem is in one direction or both?
> 
> That's really weird. I tried a suitably large file in the other
> direction (PPC to P120), and the transfer flew right by. Great
> throughput.

Could be a bad connection on the receive pair of your Ethernet cable.

Wil
-- 
Wil Cooley                                 wcooley at nakedape.cc
Naked Ape Consulting                        http://nakedape.cc
* * * * * * * Good, fast and cheap: Pick all 3! * * * * * * *
* Naked Ape Consulting             http://nakedape.cc/r/sg  *
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