From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: Re: Network receive stall avoidance (was [PATCH 2/9] deadlock prevention core) Date: Sat, 19 Aug 2006 00:28:48 -0700 Message-ID: <20060819002848.e6884792.akpm@osdl.org> References: <20060808211731.GR14627@postel.suug.ch> <44DBED4C.6040604@redhat.com> <44DFA225.1020508@google.com> <20060813.165540.56347790.davem@davemloft.net> <44DFD262.5060106@google.com> <20060813185309.928472f9.akpm@osdl.org> <1155530453.5696.98.camel@twins> <20060813215853.0ed0e973.akpm@osdl.org> <44E3E964.8010602@google.com> <20060816225726.3622cab1.akpm@osdl.org> <44E5015D.80606@google.com> <20060817230556.7d16498e.akpm@osdl.org> <44E62F7F.7010901@google.com> <20060818153455.2a3f2bcb.akpm@osdl.org> <44E650C1.80608@google.com> <20060818194435.25bacee0.akpm@osdl.org> <44E69011.4080604@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Peter Zijlstra , David Miller , riel@redhat.com, tgraf@suug.ch, linux-mm@kvack.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Mike Christie Return-path: Received: from smtp.osdl.org ([65.172.181.4]:25572 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S932459AbWHSHfj (ORCPT ); Sat, 19 Aug 2006 03:35:39 -0400 To: Daniel Phillips In-Reply-To: <44E69011.4080604@google.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Fri, 18 Aug 2006 21:14:09 -0700 Daniel Phillips wrote: > So rather than just the word deadlock, let us add "or atomic 0 order > alloc failure during TCP receive" to the challenge. Fair? If it's significantly performance-affecting in any way which is at all likely to affect anyone, sure. You can get those warnings now with regular networking using e1000, due to a combination of excessive default rx ringsize and incorrect VM tuning.