From owner-freebsd-fs@freebsd.org Tue Jan 5 05:40:38 2016 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 4E4B8A6233C for ; Tue, 5 Jan 2016 05:40:38 +0000 (UTC) (envelope-from mi+thun@aldan.algebra.com) Received: from vms173015pub.verizon.net (vms173015pub.verizon.net [206.46.173.15]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 2694B1767 for ; Tue, 5 Jan 2016 05:40:37 +0000 (UTC) (envelope-from mi+thun@aldan.algebra.com) MIME-version: 1.0 Received: from aldan.narawntapu ([100.1.236.52]) by vms173015.mailsrvcs.net (Oracle Communications Messaging Server 7.0.5.32.0 64bit (built Jul 16 2014)) with ESMTPA id <0O0G00DDXT3EYP70@vms173015.mailsrvcs.net> for freebsd-fs@freebsd.org; Mon, 04 Jan 2016 23:40:31 -0600 (CST) X-CMAE-Score: 0 X-CMAE-Analysis: v=2.1 cv=btqxfxui c=1 sm=1 tr=0 a=UorMnhrCY2jH/mPejITChw==:117 a=LaogzpLLAAAA:8 a=oR5dmqMzAAAA:8 a=7aQ_Q-yQQ-AA:10 a=r77TgQKjGQsHNAKrUKIA:9 a=A8KfzhJwOMCciS3YhZgA:9 a=pILNOxqGKmIA:10 a=JzwRw_2MAAAA:8 a=-uXMOEYdzANfLp-DCMMA:9 a=Wwoz_WDnPw1EjHLx:21 a=_W_S_7VecoQA:10 Subject: Re: NFS reads vs. writes To: Bruce Evans References: <8291bb85-bd01-4c8c-80f7-2adcf9947366@email.android.com> <5688D3C1.90301@aldan.algebra.com> <495055121.147587416.1451871433217.JavaMail.zimbra@uoguelph.ca> <568A047B.1010000@aldan.algebra.com> <20160105143542.X1191@besplex.bde.org> Cc: freebsd-fs From: "Mikhail T." Message-id: <568B574A.7010603@aldan.algebra.com> Date: Tue, 05 Jan 2016 00:40:26 -0500 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 In-reply-to: <20160105143542.X1191@besplex.bde.org> Content-Type: text/plain; CHARSET=US-ASCII Content-Transfer-Encoding: 7BIT X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Jan 2016 05:40:38 -0000 On 05.01.2016 00:19, Bruce Evans wrote: >>> It is a chunk of an older SSD, that also houses the OS. But it is >>> usually idle, because executables and libraries are cached in the >>> abundant RAM. I've seen it do 90+Mb/s (sequential)... > > Please be more careful with units (but don't use MiB's; I should killfile > that). 90 Mbits/s is still slow. Mb is megabyte in my book. This is the unit used by `systat -vm', which I mentioned earlier. 90 megabytes/s is still not at the limit of Gigabit Ethernet, however, but it is a lot closer to it. Yours, -mi