From owner-freebsd-net Fri Oct 26 21:48:40 2001 Delivered-To: freebsd-net@freebsd.org Received: from fledge.watson.org (fledge.watson.org [204.156.12.50]) by hub.freebsd.org (Postfix) with ESMTP id 7008D37B401 for ; Fri, 26 Oct 2001 21:48:37 -0700 (PDT) Received: from fledge.watson.org (robert@fledge.pr.watson.org [192.0.2.3]) by fledge.watson.org (8.11.6/8.11.5) with SMTP id f9R4mAB02893; Sat, 27 Oct 2001 00:48:10 -0400 (EDT) (envelope-from robert@fledge.watson.org) Date: Sat, 27 Oct 2001 00:48:09 -0400 (EDT) From: Robert Watson X-Sender: robert@fledge.watson.org To: Luigi Rizzo Cc: Bosko Milekic , "Keiichi SHIMA / ?$BEg7D0l?(B" , David Malone , Alfred Perlstein , net@FreeBSD.ORG Subject: Re: performance issues with M_PREPEND on clusters In-Reply-To: <20011026092840.F64631@iguana.aciri.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII 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 Fri, 26 Oct 2001, Luigi Rizzo wrote: ... > documentation will likely see this behaviour documented. Changing it > might introduce insidious bugs in the code -- because in reality, > clusters are almost never shared except for those on the TCP send queue > and for multicast packets (but who uses multicast, anyways), so there is > a chance that we will have buggy code that goes unnoticed for a long > time. ... I use multicast on my workstation pretty much every day. While my own box isn't a multicast router, we have several FreeBSD boxes deployed as multicast routers at NAI Labs that are also used daily. Sure is a lot cheaper than the commercial video-conferencing services, and as long as you use telephone conferencing for the audio, it even sounds good too :-). No comment on the technical work going on here intended, just wanted to observe that people actually do use multicast :-). Robert N M Watson FreeBSD Core Team, TrustedBSD Project robert@fledge.watson.org NAI Labs, Safeport Network Services To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message