From owner-freebsd-stable@FreeBSD.ORG Thu Oct 7 17:43:50 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6EEC710656C7 for ; Thu, 7 Oct 2010 17:43:50 +0000 (UTC) (envelope-from avg@icyb.net.ua) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id 9B0828FC0C for ; Thu, 7 Oct 2010 17:43:49 +0000 (UTC) Received: from odyssey.starpoint.kiev.ua (alpha-e.starpoint.kiev.ua [212.40.38.101]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id UAA18590; Thu, 07 Oct 2010 20:43:39 +0300 (EEST) (envelope-from avg@icyb.net.ua) Message-ID: <4CAE06CA.1010100@icyb.net.ua> Date: Thu, 07 Oct 2010 20:43:38 +0300 From: Andriy Gapon User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.9.2.9) Gecko/20100920 Lightning/1.0b2 Thunderbird/3.1.4 MIME-Version: 1.0 To: Jeremy Chadwick References: <20101007121558.GA70199@zibbi.meraka.csir.co.za> <20101007155042.GA88362@zibbi.meraka.csir.co.za> <20101007173102.GA95405@zibbi.meraka.csir.co.za> <20101007173858.GA85862@icarus.home.lan> In-Reply-To: <20101007173858.GA85862@icarus.home.lan> X-Enigmail-Version: 1.1.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org Subject: Re: zfs hang in zio->io_cv) with dd read X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Oct 2010 17:43:50 -0000 on 07/10/2010 20:38 Jeremy Chadwick said the following: > Isn't slow I/O one of the results of ARC starvation? Slow I/O can be a result of very many things. Please remove me from CC, thanks :-) -- Andriy Gapon