[Gllug] Slow local network?

[John Hearns]

On Thu, 2003-04-10 at 02:46, Garry Heaton wrote:
> I have 2 Mandrake machines and one XP connected to a router and an ADSL
> connection. With little/no activity on the internet connection Linux/Linux
> file copying via 'scp' seems to be incredibly slow, ie. a 12Mb file is
> taking 80secs. My ethernet cards are supposed to be capable of 100Mbps so
> what's going on?

Remember file syste is measured in bytes, network speed in bits.
So 12MBytes = 106 Mbits. And scp needs  encryption.

In my experience, things like this are usually down to name resolution.
I would guess that on a small LAN you are using entries in /etc/hosts,
right?

Look carefully at /etc/nsswitch.conf and make sure that the 'hosts' line
has files first. 

Then install an excellent troubleshooting tool - the 'ethereal' packet
sniffer. http://www.ethereal.com
One essential tool in my armoury (to mix metaphors).


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