Date: Thu, 22 Jan 2015 12:50:15 +0100 From: Hans Petter Selasky <hps@selasky.org> To: Randy Stewart <randall@lakerest.net> Cc: Adrian Chadd <adrian@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>, Konstantin Belousov <kostikbel@gmail.com>, "M. Warner Losh" <imp@bsdimp.com> Subject: Re: svn commit: r277213 - in head: share/man/man9 sys/kern sys/ofed/include/linux sys/sys Message-ID: <54C0E3F7.9080403@selasky.org> In-Reply-To: <04866FE0-43BF-4569-9B67-7ED5F6F4F736@lakerest.net> References: <201501151532.t0FFWV2Y037455@svn.freebsd.org> <CAJ-Vmok0GXZoojyi=jE=b5D-d338APztaf3Pw0_AAQ-173XSWw@mail.gmail.com> <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>
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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
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