From owner-svn-src-all@FreeBSD.ORG Thu Jan 22 11:49:27 2015 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id ED1719F6; Thu, 22 Jan 2015 11:49:27 +0000 (UTC) Received: from mail.turbocat.net (heidi.turbocat.net [88.198.202.214]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id A32B67D9; Thu, 22 Jan 2015 11:49:27 +0000 (UTC) Received: from laptop015.home.selasky.org (cm-176.74.213.204.customer.telag.net [176.74.213.204]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.turbocat.net (Postfix) with ESMTPSA id 3709B1FE023; Thu, 22 Jan 2015 12:49:25 +0100 (CET) Message-ID: <54C0E3F7.9080403@selasky.org> Date: Thu, 22 Jan 2015 12:50:15 +0100 From: Hans Petter Selasky User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: Randy Stewart Subject: Re: svn commit: r277213 - in head: share/man/man9 sys/kern sys/ofed/include/linux sys/sys References: <201501151532.t0FFWV2Y037455@svn.freebsd.org> <54BDD9E1.6090505@selasky.org> <20150120075126.GA42409@kib.kiev.ua> <54BE0AAA.4050104@selasky.org> <20150120090057.GD42409@kib.kiev.ua> <54BE21F0.6010602@selasky.org> <7C692107-51CF-4DFA-BD6C-623D56893150@bsdimp.com> <54C0A352.8090701@selasky.org> <20150122081023.GT42409@kib.kiev.ua> <54C0B75B.9070305@selasky.org> <04866FE0-43BF-4569-9B67-7ED5F6F4F736@lakerest.net> In-Reply-To: <04866FE0-43BF-4569-9B67-7ED5F6F4F736@lakerest.net> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Cc: Adrian Chadd , "src-committers@freebsd.org" , "svn-src-all@freebsd.org" , "svn-src-head@freebsd.org" , Konstantin Belousov , "M. Warner Losh" X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Jan 2015 11:49:28 -0000 On 01/22/15 12:26, Randy Stewart wrote: > Hans: > > We (netflix) run in production 35% of the internet with these very things > you identify no lock an all. We *do* have some issue we are looking at but so far > I have *never* connected the dots the way you were claiming that would > cause a crash. I can see where TCP would do incorrect retransmissions but > I did *not* see a crash. Now granted my look was quick at this, but that > was due to time constraints and the holidays. I am going to put myself full-time > on this to see if I can understand both how you got at “there is a panic in tcp” and > it must fully be the callout-subsystem thus we need to re-write large parts of it. > > You *may* be correct in a re-write is needed, you *may* be completely incorrect. > In either case I plan to dig into this and find out. > Hi, There are multiple issues in the bag here ... --HPS