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Date:      Tue, 3 Jul 2001 00:09:14 -0400
From:      Bryan Fullerton <bjf@samurai.com>
To:        net@freebsd.org
Subject:   PPPoE latency
Message-ID:  <f05101003b766f52ce823@[192.168.1.34]>

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Howdy,

I've been wondering why the latency is higher in FreeBSD's PPPoE 
implementation. From what I've seen, ping times via my gateway box 
are significantly higher than what friends are seeing with dedicated 
router boxes (ie Linksys) on the same DSL provider.

Here's what I'm seeing to the other end of my connection, no other 
meaningful traffic going on:

--- 65.92.109.1 ping statistics ---
100 packets transmitted, 100 packets received, 0% packet loss
round-trip min/avg/max/stddev = 53.982/65.063/102.373/7.478 ms

Here's a ping on my friend's machine (Mac ping, sorry for lack of precision):

Packets out/in/bad/%loss = 64/64/0/0.0
Round Trip Time (ms) min/avg/max = 14/24/59

My box should be fine cpu-wise, it's a Celeron/300, and isn't doing 
anything else. The card PPPoE is running over is an ISA 10BaseT 
D-Link card using the ed(4) driver, if that makes any difference. I 
track STABLE with this box, it's currently at:

FreeBSD katana.apt.samurai.com 4.3-STABLE FreeBSD 4.3-STABLE #13: Sun
Jun 24 01:43:39 EDT 2001

Any thoughts? I can live with this, the connection is rock solid and 
has been for over a year now, just curious as to why. Apologies if 
this has come up before, I searched the list archives and the bug 
list.

Thanks,

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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