From owner-freebsd-stable@FreeBSD.ORG Fri Feb 8 16:14:51 2008 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 99DDC16A417 for ; Fri, 8 Feb 2008 16:14:51 +0000 (UTC) (envelope-from kamikaze@bsdforen.de) Received: from mail.bsdforen.de (bsdforen.de [212.204.60.79]) by mx1.freebsd.org (Postfix) with ESMTP id 4CF5913C455 for ; Fri, 8 Feb 2008 16:14:51 +0000 (UTC) (envelope-from kamikaze@bsdforen.de) Received: from mobileKamikaze.norad (vpn-cl-166-210.rz.uni-karlsruhe.de [141.3.166.210]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.bsdforen.de (Postfix) with ESMTP id D344F405478; Fri, 8 Feb 2008 17:16:11 +0100 (CET) Message-ID: <47AC7FF6.1020801@bsdforen.de> Date: Fri, 08 Feb 2008 17:14:46 +0100 From: Dominic Fandrey User-Agent: Thunderbird 2.0.0.9 (X11/20080205) MIME-Version: 1.0 To: Tom Evans References: <47A9F835.1060200@bsdforen.de> <47AA0696.5020109@bsdforen.de> <7872AB6E-21DA-4E2D-93C0-D07CFA3A7E47@mac.com> <47AA0E3E.4020304@bsdforen.de> <47ABF66E.4040807@bsdforen.de> <1202485501.2126.34.camel@localhost> In-Reply-To: <1202485501.2126.34.camel@localhost> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: "Carlos A. M. dos Santos" , freebsd-stable@freebsd.org Subject: Re: RELENG_7: interrupt eating whole cpu core 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: Fri, 08 Feb 2008 16:14:51 -0000 Tom Evans wrote: > On Fri, 2008-02-08 at 11:43 -0200, Carlos A. M. dos Santos wrote: >> >> Yes, it happens in my notebook (HP NX6320). > > Sorry to jump into this thread, as it is slightly off-topic - I have a > HP NC6320 (so not quite exact same model, but specs seem extremely close > - mine is a core duo, not core 2 duo, but chipset, graphics, screen size > is identical), and cannot get my DVD drive to operate in DMA mode. I > track RELENG_7, last updated 3rd Feb. > > I have: > > acd0: DVDR at ata0-master PIO4 > > on a > > atapci0: port > 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x60a0-0x60af irq 16 at device 31.1 > on pci0 > ata0: on atapci0 > ata0: [ITHREAD] > ata1: on atapci0 > ata1: [ITHREAD] > > with settings of > > hw.ata.wc: 1 > hw.ata.atapi_dma: 1 > hw.ata.ata_dma: 1 > > atacontrol says this about the DVD drive: > >> # atacontrol info ata0; atacontrol cap acd0 > Master: acd0 ATA/ATAPI revision 6 > Slave: no device present > > Protocol ATA/ATAPI revision 6 > device model MATSHITADVD-RAM UJ-840S > serial number > firmware revision 1.11 > cylinders 0 > heads 0 > sectors/track 0 > lba supported > lba48 not supported > dma supported > overlap not supported > > Feature Support Enable Value Vendor > write cache no no > read ahead no no > Tagged Command Queuing (TCQ) no no 0/0x00 > SMART no no > microcode download no no > security no no > power management no no > advanced power management no no 0/0x00 > automatic acoustic management no no 0/0x00 0/0x00 > >> # atacontrol mode acd0 > current mode = PIO4 > > If I try to turn on DMA, I just get WDMA2, which just doesn't cut it: I think any DMA mode is fast enough to handle a DVD drive. There's just no necessity for more. >> # atacontrol mode acd0 udma5 > current mode = WDMA2 Same as for me. I'm satisfied with the speed of the drive.