From owner-freebsd-net Mon Mar 4 11: 6: 3 2002 Delivered-To: freebsd-net@freebsd.org Received: from dirty.research.bell-labs.com (dirty.research.bell-labs.com [204.178.16.6]) by hub.freebsd.org (Postfix) with SMTP id E019B37B400 for ; Mon, 4 Mar 2002 11:05:43 -0800 (PST) Received: from scummy.research.bell-labs.com ([135.104.2.10]) by dirty; Mon Mar 4 14:04:20 EST 2002 Received: from aura.research.bell-labs.com (aura.research.bell-labs.com [135.104.46.10]) by scummy.research.bell-labs.com (8.11.6/8.11.6) with ESMTP id g24J41k13347 for ; Mon, 4 Mar 2002 14:04:01 -0500 (EST) Received: from fgupcmh (fgu-pcmh.research.bell-labs.com [135.104.47.121]) by aura.research.bell-labs.com (8.9.1/8.9.1) with SMTP id OAA04678 for ; Mon, 4 Mar 2002 14:04:00 -0500 (EST) Reply-To: From: "Fengrui Gu" To: Subject: Queue size limitation in dummynet Date: Mon, 4 Mar 2002 14:08:20 -0500 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) Importance: Normal In-Reply-To: <3C83B11B.3060306@tenebras.com> X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4522.1200 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 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? thanks, To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message