Date: Fri, 10 Apr 2015 09:58:02 -0700 From: Jim Harris <jim.harris@gmail.com> To: Tobias Oberstein <tobias.oberstein@gmail.com> Cc: Konstantin Belousov <kostikbel@gmail.com>, "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>, Adrian Chadd <adrian@freebsd.org>, Michael Fuckner <michael@fuckner.net>, Alan Somers <asomers@freebsd.org> Subject: Re: NVMe performance 4x slower than expected Message-ID: <CAJP=Hc8RTmFK5DL%2BToiRbcSMQbBtTKVkGMtp2FJWbz=AY%2BQQBw@mail.gmail.com> In-Reply-To: <5527F554.2030806@gmail.com> References: <551BC57D.5070101@gmail.com> <CAOtMX2jVwMHSnQfphAF%2Ba2%2Bo7eLp62nHmUo4t%2BEahrXLWReaFQ@mail.gmail.com> <CAJP=Hc-RNVuhPePg7bnpmT4ByzyXs_CNvAs7Oy7ntXjqhZYhCQ@mail.gmail.com> <551C5A82.2090306@gmail.com> <20150401212303.GB2379@kib.kiev.ua> <CAJP=Hc87FMYCrQYGfAtefQ8PLT3WtnvPfPSppp3zRF-0noQR9Q@mail.gmail.com> <CAJP=Hc-WLKe3%2BDQ=2o21CY=aaQAjADrzEfnD7NVO1Cotu4vcGg@mail.gmail.com> <5526EA33.6090004@gmail.com> <CAJ-VmonecBDemkfS=3nV2jiuJfOFJg7bZOacxOKXvTWktxBd9A@mail.gmail.com> <5527F554.2030806@gmail.com>
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On Fri, Apr 10, 2015 at 9:07 AM, Tobias Oberstein < tobias.oberstein@gmail.com> wrote: > Hi Adrian, > > > Dell has graciously loaned me a bunch of hardware to continue doing > > FWIW, Dell has a roughly comparable system: Dell R920. But they don't have > Intel NVMe's on their menu, only Samsung (and FusionIO, but that's not > NVMe). > > NUMA development on, but I have no NVMe hardware. I'm hoping people at >> > > The 8 NVMe PCIe SSDs in the box we're deploying are a key feature of this > system (will be a data-warehouse). A single NVMe probably won't have > triggered (all) issues we experienced. > > We are using the largest model (2TB), and this amounts to 50k bucks for > all eight. The smallest model (400GB) is 1.5k, so 12k in total. > > Intel can continue kicking along any desires for NUMA that they >> require. (Which they have, fwiw.) >> > > It's already awesome that Intel has senior engineers working on FreeBSD > driver code! And it would underline Intel's Open-source commitment and tech > leadership if they donated a couple of these beefy NVMes. > Intel has agreed to send DC P3700 samples to the FreeBSD Foundation to put in the cluster for this kind of work - we are working on getting these through the internal sample distribution process at the moment. -Jim
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