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Date:      Wed, 6 Mar 2002 00:41:54 -0800
From:      Luigi Rizzo <rizzo@icir.org>
To:        Fengrui Gu <gfr@lucent.com>
Cc:        freebsd-net@FreeBSD.ORG
Subject:   Re: Queue size limitation in dummynet
Message-ID:  <20020306004154.B83775@iguana.icir.org>
In-Reply-To: <FCENIMJAHNNHNOPKCEFECEEHCJAA.gfr@lucent.com>
References:  <3C83B11B.3060306@tenebras.com> <FCENIMJAHNNHNOPKCEFECEEHCJAA.gfr@lucent.com>

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On Mon, Mar 04, 2002 at 02:08:20PM -0500, Fengrui Gu wrote:
> When trying to set queue size (>100) with ipfw,
> I found ipfw actually hard-coded the queue size limit to 100.
> 
> I am trying to simulation network link with very high delay and relatively
> low bandwidth. However, I don't want to suffer packet drops. So I need a
> large queue size.
> 
> Can anyone tell me why 100 is the limitation? Is there any problem if I
> increase the number, e.g., 200?

there is no problem in increasing the max queue size, i just had
to set a limit somewhere... but i agree that 100 is probably
too low, especially these days when machines have tons of memory.

I will try to bump up the limit in the future.

	cheers
	luigi

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