From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965079AbVHZPe3 (ORCPT ); Fri, 26 Aug 2005 11:34:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965080AbVHZPe2 (ORCPT ); Fri, 26 Aug 2005 11:34:28 -0400 Received: from web33308.mail.mud.yahoo.com ([68.142.206.123]:33967 "HELO web33308.mail.mud.yahoo.com") by vger.kernel.org with SMTP id S965079AbVHZPe2 (ORCPT ); Fri, 26 Aug 2005 11:34:28 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Reply-To:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=G3C5miNmvxc9okDSM4tpxoJY5B8WLh+VGw89bF1ALamZpXp4eHQlnlfrz5rYkeS1ibvsrC7mgYq1l4Ua9d0R9KofqQlWrcJam6TUu/l7BBv5f8OyKbEWZyR5lJ4QQcPeDLSG7NWwsVyVue1RcOXTds7lvHpjfwkRIvUti0KloNw= ; Message-ID: <20050826153414.9643.qmail@web33308.mail.mud.yahoo.com> Date: Fri, 26 Aug 2005 08:34:14 -0700 (PDT) From: Danial Thom Reply-To: danial_thom@yahoo.com Subject: Re: 2.6.12 Performance problems To: Adrian Bunk Cc: linux-kernel@vger.kernel.org In-Reply-To: <20050826131750.GG6471@stusta.de> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --- Adrian Bunk wrote: > On Mon, Aug 22, 2005 at 08:41:11AM -0700, > Danial Thom wrote: > >... > > > > The issue I have with that logic is that you > seem > > to use "kernel" in a general sense without > regard > > to what its doing. Dropping packets is always > > detrimental to the user regardless of what > he's > > using the computer for. An audio stream that > > drops packets isn't going to be "smooth" at > the > > user level. > > > That's not always true. > > Imagine a slow computer with a GBit ethernet > connection, where the user > is downloading files from a server that can > utilize the full > network connection while listening to music > from his local disk with > XMMS. > > In this case, the audio stream is not depending > on the network > connection. And the user might prefer dropped > packages over a stuttering > XMMS. > Audio connections are going to be windowed/flowed in some way (thats how the internet works) so you're not dealing with real capacity issues in that example. You're not going to overrun your ethernet adapter with an application; the issue is running applications on servers that are also doing a lot of other things. You can't isolate a particular application at the device level, so you drop packets randomly; not just ones you don't care about. If your application can't run well on your machine without dropping real traffic, then you need a faster machine, not an OS that compensates in a negative way. DT __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com