From owner-freebsd-fs@freebsd.org Sun Jan 3 15:05:31 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 C7453A5F1A2 for ; Sun, 3 Jan 2016 15:05:31 +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 ABEDE1EF0 for ; Sun, 3 Jan 2016 15:05:31 +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 <0O0D00BOTR40IM40@vms173015.mailsrvcs.net> for freebsd-fs@FreeBSD.org; Sun, 03 Jan 2016 08:04:53 -0600 (CST) X-CMAE-Score: 0 X-CMAE-Analysis: v=2.1 cv=J+9Xl1TS 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=BUiEDfTYXKncft4odhMA:9 a=QEXdDO2ut3YA:10 a=n8i27M1mAAAA:8 a=zjlkUf9so2vQcvGYABIA:9 a=_W_S_7VecoQA:10 Subject: Re: NFS reads vs. writes To: =?UTF-8?Q?Karli_Sj=c3=b6berg?= References: <332f85ba-a440-45fd-acd9-5b9e2184131b@email.android.com> Cc: "freebsd-fs@FreeBSD.org" From: "Mikhail T." Message-id: <56892A80.2000207@aldan.algebra.com> Date: Sun, 03 Jan 2016 09:04:48 -0500 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 In-reply-to: <332f85ba-a440-45fd-acd9-5b9e2184131b@email.android.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT 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: Sun, 03 Jan 2016 15:05:31 -0000 On 03.01.2016 03:41, Karli Sjöberg wrote: > > Ok, so what about the local performance? Have you run e.g. Bonnie++ in > the same directory? > Let me try to explain the problem one more time. As I stated already, the data is read from and written to the same filesystems: a:/a --- NFS ---> b:/b The performance difference is between machine a /writing/ over NFS (2Mb/s) vs. machine b /reading/ over NFS (56Mb/s). If it is still unclear, I give up. -mi