From owner-freebsd-current@FreeBSD.ORG Mon Jun 29 14:53:13 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6987C1065674 for ; Mon, 29 Jun 2009 14:53:13 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from cmail.optima.ua (cmail.optima.ua [195.248.191.121]) by mx1.freebsd.org (Postfix) with ESMTP id DE85C8FC20 for ; Mon, 29 Jun 2009 14:53:12 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from [212.86.226.226] (account mav@alkar.net HELO mavbook.mavhome.dp.ua) by cmail.optima.ua (CommuniGate Pro SMTP 5.2.9) with ESMTPSA id 247077414; Mon, 29 Jun 2009 17:53:08 +0300 Message-ID: <4A48D551.5090509@FreeBSD.org> Date: Mon, 29 Jun 2009 17:53:05 +0300 From: Alexander Motin User-Agent: Thunderbird 2.0.0.21 (X11/20090405) MIME-Version: 1.0 To: Kamigishi Rei References: <1246206181.00132972.1246192801@10.7.7.3> <1246206186.00132982.1246194002@10.7.7.3> <1246209783.00133001.1246197001@10.7.7.3> <1246260183.00133237.1246247402@10.7.7.3> <4A48798A.5070604@FreeBSD.org> <4A487BF7.8060103@haruhiism.net> <4A48922D.5090507@FreeBSD.org> <4A48C0BC.3030104@haruhiism.net> <4A48CD19.8080606@FreeBSD.org> <4A48D136.3050309@haruhiism.net> In-Reply-To: <4A48D136.3050309@haruhiism.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-current@freebsd.org Subject: Re: RFC: ATA to CAM integration patch X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Jun 2009 14:53:13 -0000 Kamigishi Rei wrote: > Alexander Motin wrote: >>> ahcich1: ALL SLOTS BUSY! >>> Is it purely informational or does it indicate a problem? (I'm using >>> Intel Q35+ICH9 in AHCI mode.) >> It is bad. It must never happen. It means that driver got more >> commands then it has empty slots available. Results can be unpredictable. >> How have you manage it? Were there any other messages around? > No other messages. Going to try your patch from the followup message. > Basically, I did nothing out of the ordinary. I'm running mysqld, > postgres, and two lighttpds in jails, one of the lighttpds is serving > huge media files. > The messages appeared mostly during "make buildworld" for one of the > GEOM_MIRROR drives (/usr/obj operations probably) and for one of raidz1 > drives (where /usr/src resides). It could be not a real bug, but incorrect diagnostic, in situation, when the last of 32 submitted command finishes first. NCQ in practice. :) -- Alexander Motin