From owner-freebsd-stable@FreeBSD.ORG Mon Nov 13 17:27:53 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7190016A51B for ; Mon, 13 Nov 2006 17:27:53 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from alnrmhc12.comcast.net (alnrmhc12.comcast.net [206.18.177.52]) by mx1.FreeBSD.org (Postfix) with ESMTP id 12BBF43F66 for ; Mon, 13 Nov 2006 17:19:46 +0000 (GMT) (envelope-from jdc@koitsu.dyndns.org) Received: from icarus.home.lan (c-67-174-220-97.hsd1.ca.comcast.net[67.174.220.97]) by comcast.net (alnrmhc12) with ESMTP id <20061113171946b1200n2seve>; Mon, 13 Nov 2006 17:19:46 +0000 Received: by icarus.home.lan (Postfix, from userid 1000) id F412F1FA01D; Mon, 13 Nov 2006 09:19:45 -0800 (PST) Date: Mon, 13 Nov 2006 09:19:45 -0800 From: Jeremy Chadwick To: freebsd-stable@FreeBSD.ORG, ivoras@fer.hr Message-ID: <20061113171945.GA26567@icarus.home.lan> Mail-Followup-To: freebsd-stable@FreeBSD.ORG, ivoras@fer.hr References: <200611131633.kADGXO8J073080@lurza.secnetix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200611131633.kADGXO8J073080@lurza.secnetix.de> X-PGP-Key: http://jdc.parodius.com/pubkey.asc User-Agent: Mutt/1.5.13 (2006-08-11) Cc: Subject: Re: Cruel and unusual problems with Proliant ML350 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Nov 2006 17:27:53 -0000 On Mon, Nov 13, 2006 at 05:33:24PM +0100, Oliver Fromme wrote: > If it's really only a web server, then you probably don't > need the USB ports. In that case you should remove ohci > and ehci from your kernel. The USB interrupt handler is > quite heavy-weight, so it can have a noticeable impact if > the interrupt is shared with other devices. I'll agree with this (re: webservers not needing USB), except in regards to one item: keyboards. More and more x86 PCs these days are expecting keyboards to be USB-based. Yes, PS/2 ports are still present on most (but not all) motherboards, but eventually that will be phased out. I like the idea of being able to go to my co-location facility and plug in a USB keyboard to begin working on a server, and when finished remove the keyboard and leave. PS/2 was never intended to be hot-swappable, and as I'm sure many can attest to, removing or adding a PS/2 keyboard is generally frowned upon (it works here, it doesn't work there, etc.). I've seen some recent commits to the keyboard code which address being able to plug in a PS/2 keyboard while the machine is powered on (thus not having to reboot), for what it's worth. Summary: ukbd is one reason USB is useful on servers. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |