From owner-freebsd-fs@FreeBSD.ORG Mon Dec 1 22:49:50 2014 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 62FCADB9 for ; Mon, 1 Dec 2014 22:49:50 +0000 (UTC) Received: from woozle.rinet.ru (woozle.rinet.ru [195.54.192.68]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id D3444355 for ; Mon, 1 Dec 2014 22:49:49 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by woozle.rinet.ru (8.14.5/8.14.5) with ESMTP id sB1M5dbx064347; Tue, 2 Dec 2014 01:05:39 +0300 (MSK) (envelope-from marck@rinet.ru) Date: Tue, 2 Dec 2014 01:05:39 +0300 (MSK) From: Dmitry Morozovsky To: Dmitriy Makarov Subject: Re: Irregular disk IO and poor performance (possibly after reading a lot of data from pool) In-Reply-To: <1417467958419-5969998.post@n5.nabble.com> Message-ID: References: <1417438604.143909513.k6b3b33f@frv41.fwdcdn.com> <547CA5AA.8080105@multiplay.co.uk> <1417467958419-5969998.post@n5.nabble.com> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) X-NCC-RegID: ru.rinet X-OpenPGP-Key-ID: 6B691B03 MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (woozle.rinet.ru [0.0.0.0]); Tue, 02 Dec 2014 01:05:39 +0300 (MSK) Cc: freebsd-fs@freebsd.org X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 01 Dec 2014 22:49:50 -0000 On Mon, 1 Dec 2014, Dmitriy Makarov wrote: > Steven Hartland wrote > > What disks? > Western Digital RE4 series > WD1003FBYX Maybe controller' issues involved as well. ``zpool status'' and appropriate portions of /var/run/dmesg.boot could be useful. -- Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] [ FreeBSD committer: marck@FreeBSD.org ] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------