From owner-freebsd-stable@FreeBSD.ORG Tue Jun 24 13:09:08 2014 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id B7EB9E3 for ; Tue, 24 Jun 2014 13:09:08 +0000 (UTC) Received: from smarthost1.sentex.ca (smarthost1.sentex.ca [IPv6:2607:f3e0:0:1::12]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "smarthost.sentex.ca", Issuer "smarthost.sentex.ca" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 829BA2705 for ; Tue, 24 Jun 2014 13:09:08 +0000 (UTC) Received: from [IPv6:2607:f3e0:0:4:f025:8813:7603:7e4a] (saphire3.sentex.ca [IPv6:2607:f3e0:0:4:f025:8813:7603:7e4a]) by smarthost1.sentex.ca (8.14.9/8.14.9) with ESMTP id s5OD93x2009372; Tue, 24 Jun 2014 09:09:03 -0400 (EDT) (envelope-from mike@sentex.net) Message-ID: <53A9785C.7040906@sentex.net> Date: Tue, 24 Jun 2014 09:08:44 -0400 From: Mike Tancsa Organization: Sentex Communications User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: FreeBSD-STABLE Mailing List Subject: Re: nfs slowdown (RELENG_8) References: <53A884EF.2020900@sentex.net> <53A88A4C.4020805@sentex.net> In-Reply-To: <53A88A4C.4020805@sentex.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.74 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 Jun 2014 13:09:08 -0000 On 6/23/2014 4:13 PM, Mike Tancsa wrote: > > Reads are plenty fast. On the initial "problem" server where the writes > are all of a sudden super slow, the read rate on a uncached file on the > server comes in at > > 1592524800 bytes transferred in 16.746340 secs (95096887 bytes/sec) or ~ > 780Mb/s Also, I am able to blast out using /usr/src/tool/tools/netrate/netblast at full gigabit speeds to the nfs server from the problem machines. It just seems nfs writes are hindered ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/