Lousy Network Performance

[Kurt Wall]

On Tue, Jun 28, 2005 at 02:14:26AM -0400, Jay Nugent took 0 lines to write:
> Greetings,
> 
> On Mon, 27 Jun 2005, Vu Pham wrote:
> 
> >  
> > 
> > > -----Original Message-----
> > > From: linux-users-bounces at linux-sxs.org 
> > > [mailto:linux-users-bounces at linux-sxs.org] On Behalf Of Kurt Wall
> > > Sent: Monday, June 27, 2005 9:57 PM
> > > To: linux-users at linux-sxs.org
> > > Subject: Lousy Network Performance
> > > 
> > > Hi, list,
> > > 
> > > How do I go about solving a significant latency problem on my 
> > > internal network. I have two computers connected via a 
> > > crossover cable, eth1 on the "server" (luther) to eth0 on the 
> > > "desktop"
> > > (easter). Both cards are 10/100. Ping time is atrocious:
> > > 
> 
>    ...stuff snipped...
> 
> 
> > > 
> > > I can't see any reason why the latency should be so extreme.
> > > 
> > 
> > The first thing I would try is to replace  the cross-over cable. One time I
> > made a cross-over cable by myself and missed one inside string and got
> > similar problem.
> > 
> > I also would think of having a third box that you can connect each PC to to
> > check if the problem on which one. 
> 
>    There *IS* a minimum length that a patch or crossover cable can be.  I
> seem to recall the limit was 6 feet.  I would try a 10 or 25 foot cable
> just to be certain that the minimum is not being pressed.

The crossover cable is 10 feet long and "stock," that is, not
handmade. As I've written in other messages, I get the same performance
if I run the test through a hub and don't use the crossover connection.

Kurt
-- 
"In order to make an apple pie from scratch, you must first create the
universe."
		-- Carl Sagan, Cosmos