Ethereal-users: Re: [Ethereal-users] Seeing drops on <5Mbit of traffic

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From: Richard Urwin <richard@xxxxxxxxxxxxxxx>
Date: Fri, 23 Jan 2004 14:44:36 +0000
On Friday 23 Jan 2004 2:20 pm, Temkin, David wrote:
> Hi all,
>
> 	I'm having an issue where I'm seeing drops when I'm doing
> captures of around ~4-5 Mbit of traffic (mostly internet traffic
> between clients and proxy servers).  The machine I'm running ethereal
> on is a very powerful box (Dual 3.0ghz Xeon's).  It's running RedHat
> 9 (with a 2.6 kernel (same issues under 2.4)), and I've tried it with
> a few different NICs.  I'll generally see about a 5% drop rate.
>
> Anything anyone can think of that I should look at that I'm not
> checking?   The compliation is fresh with a fresh libpcap as well. 
> I'm doing the capture with Display during capture disabled & no name
> resolution...

Simple things first. What hub are you using, and do you have two NICs? 
I'm thinking that the full-duplex aspect of ethernet might be biting 
you.

-- 
Richard Urwin