Skip site navigation (1)Skip section navigation (2)
Date:      Wed, 4 Jul 2001 02:31:13 +0200
From:      Jesper Skriver <jesper@skriver.dk>
To:        Bryan Fullerton <bjf@samurai.com>
Cc:        bv@wjv.com, net@FreeBSD.ORG
Subject:   Re: PPPoE latency
Message-ID:  <20010704023113.A40316@skriver.dk>
In-Reply-To: <f05101002b76700057320@[192.168.1.34]>; from bjf@samurai.com on Tue, Jul 03, 2001 at 01:02:22AM -0400
References:  <f05101003b766f52ce823@[192.168.1.34]> <20010703004307.E2458@wjv.com> <f05101002b76700057320@[192.168.1.34]>

next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, Jul 03, 2001 at 01:02:22AM -0400, Bryan Fullerton wrote:
> At 12:43 AM -0400 7/3/01, Bill Vermillion wrote:
> 
> >Since the first link to the DSL is not your system but the box
> >above it, I really suspect that is the problem.
> 
> The pings that I provided were to the first hop, ie my gateway at the 
> other end of the connection.

You can't use that for measurement, on many router products the
process of replying to ICMP echo's (and generating other ICMP
messages) is a VERY low priority task, so if it's CPU is loaded
with other tasks, you will see a excessive latency in ping's to
that router, but you will probably see a much more normal delay to
a host behind it.

/Jesper

-- 
Jesper Skriver, jesper(at)skriver(dot)dk  -  CCIE #5456
Work:    Network manager   @ AS3292 (Tele Danmark DataNetworks)
Private: FreeBSD committer @ AS2109 (A much smaller network ;-)

One Unix to rule them all, One Resolver to find them,
One IP to bring them all and in the zone to bind them.

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-net" in the body of the message




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20010704023113.A40316>