Date: Tue, 20 Jan 2015 09:25:41 -0500 From: Ed Maste <emaste@freebsd.org> To: Hans Petter Selasky <hps@selasky.org> Cc: Konstantin Belousov <kostikbel@gmail.com>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>, Adrian Chadd <adrian@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org> Subject: Re: svn commit: r277213 - in head: share/man/man9 sys/kern sys/ofed/include/linux sys/sys Message-ID: <CAPyFy2B4Tw0UTozJOSvSKra=1122q_4B-=-RX3%2BrYL6HR_kLXA@mail.gmail.com> In-Reply-To: <54BE21F0.6010602@selasky.org> 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>
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On 20 January 2015 at 04:37, Hans Petter Selasky <hps@selasky.org> wrote: > > It is not very hard to update existing callout clients and you can do it > too, if you need the extra bits of performance. Hi Hans Petter, The issue here is that the onus is on the one changing a KPI to support its consumers through the transition. This doesn't necessarily mean doing all of the work. But the KPI changes, and techniques for adapting to them, need to be communicated very well in advance of the change arriving. I appreciate that you have a patch for TCP in review now - but having Adrian encounter a huge TCP performance regression is an unfortunate way to discover this issue.
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