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Date:      Tue, 3 Jul 2001 23:32:15 -0400
From:      Bryan Fullerton <bjf@samurai.com>
To:        Jesper Skriver <jesper@skriver.dk>
Cc:        bv@wjv.com, net@FreeBSD.ORG
Subject:   Re: PPPoE latency
Message-ID:  <f05101001b7683e5807dc@[192.168.1.34]>
In-Reply-To: <20010704023113.A40316@skriver.dk>
References:  <f05101003b766f52ce823@[192.168.1.34]> <20010703004307.E2458@wjv.com> <f05101002b76700057320@[192.168.1.34]> <20010704023113.A40316@skriver.dk>

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At 2:31 AM +0200 7/4/01, Jesper Skriver wrote:
>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.

Valid point - pinging the other end of my gateway is giving average 
responses in the 65ms range, pinging the core router behind it 
returns averages of 55ms.

Still high, though.

Bryan
-- 
Bryan Fullerton               http://bryanfullerton.com/
Core Competence               uunet.ca!gts!cspace!bjf
Samurai Consulting
Can you feel the Ohmu call?

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