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Date: Tue, 10 Feb 2004 07:08:09 -0500
From: Chuck Swiger <cswiger@mac.com>
Organization: The Courts of Chaos
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To: Bjorn Eikeland <bjorn@eikeland.info>
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cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
Subject: Re: dummynet = local taffic > 100ms - help!
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Bjorn Eikeland wrote:
[ ... ]
> DUMMYNET and HZ=10000 is in the kernel.
> 
> Any suggestions what can be causing this? (I've only got the one nic,
> and use a adsl router for internett)

I seem to recall some issues with setting HZ very fast, in that it breaks the 
uniqueness assumptions made by TCP sequence generation if HZ > 1000.  Dummynet 
does want better than the standard 10ms granularity (HZ=100), so perhaps you 
might try HZ=1000 and see whether that makes any difference.

You might also consider increasing the queue length of your pipes when using 
prioriziation--- are you seeing packets being dropped?

-- 
-Chuck