From owner-freebsd-net Wed Mar 6 0:42:13 2002 Delivered-To: freebsd-net@freebsd.org Received: from iguana.icir.org (iguana.icir.org [192.150.187.36]) by hub.freebsd.org (Postfix) with ESMTP id 3817237B400 for ; Wed, 6 Mar 2002 00:42:12 -0800 (PST) Received: (from rizzo@localhost) by iguana.icir.org (8.11.6/8.11.3) id g268ftx83874; Wed, 6 Mar 2002 00:41:55 -0800 (PST) (envelope-from rizzo) Date: Wed, 6 Mar 2002 00:41:54 -0800 From: Luigi Rizzo To: Fengrui Gu Cc: freebsd-net@FreeBSD.ORG Subject: Re: Queue size limitation in dummynet Message-ID: <20020306004154.B83775@iguana.icir.org> References: <3C83B11B.3060306@tenebras.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.3.23i Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org 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 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message