From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.43) id 1EJvCs-0001St-EE for garchives@archives.gentoo.org; Mon, 26 Sep 2005 15:47:54 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.5/8.13.5) with SMTP id j8QFcY8o027508; Mon, 26 Sep 2005 15:38:34 GMT Received: from xproxy.gmail.com (xproxy.gmail.com [66.249.82.196]) by robin.gentoo.org (8.13.5/8.13.5) with ESMTP id j8QFcX6K002618 for ; Mon, 26 Sep 2005 15:38:33 GMT Received: by xproxy.gmail.com with SMTP id t16so110805wxc for ; Mon, 26 Sep 2005 08:45:25 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=gRT2LQyiOuFY+L328n56+Uq87CBD1Zz2LfvvAJ3AYpdn2fyP96vFbosXCOh3sq3MDFioGOxHYLS5g9Lpqo7JGmKvgpfmCjHbI4DOMRpv1JG/hSw17tHneaqyM1ZIIESY6KfkEarLDcnpurrXGMcIcrEGuUJfFsfuRExbrFWRUMg= Received: by 10.70.50.2 with SMTP id x2mr2278991wxx; Mon, 26 Sep 2005 08:45:25 -0700 (PDT) Received: by 10.70.11.7 with HTTP; Mon, 26 Sep 2005 08:45:25 -0700 (PDT) Message-ID: <5bdc1c8b050926084528085842@mail.gmail.com> Date: Mon, 26 Sep 2005 08:45:25 -0700 From: Mark Knecht To: gentoo-amd64@lists.gentoo.org Subject: Re: [gentoo-amd64] Can I run a 32-bit kernel on my 64-bit kernel Gentoo machine? In-Reply-To: <200509261726.14988.volker.armin.hemmann@tu-clausthal.de> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-amd64@gentoo.org Reply-to: gentoo-amd64@lists.gentoo.org MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Disposition: inline References: <5bdc1c8b05092519454117d3df@mail.gmail.com> <43380515.6040408@erols.com> <5bdc1c8b0509260759ea041b4@mail.gmail.com> <200509261726.14988.volker.armin.hemmann@tu-clausthal.de> Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by robin.gentoo.org id j8QFcX6K002618 X-Archives-Salt: 7b664fca-3652-4c54-8398-82fba888730a X-Archives-Hash: 6da2feaeb82884361c1884cb43fbd06d On 9/26/05, Volker Armin Hemmann wrote: > On Monday 26 September 2005 16:59, Mark Knecht wrote: > > > "Any disk activity seems to be the main cause of xruns on this machine." > > > > If I get xruns (a failure mode of Jack-Audio-Connection-Kit running > > on this hardware) then the machine is useless doing the sort of Linux > > audio work I want to do so this is the problem I'm trying to solve. > > That's my only goal. > > have you checked that 'unmaskirq' is set for your harddisk? > > hdparm /dev/hda should look like this: > hdparm /dev/hda > > /dev/hda: > multcount = 16 (on) > IO_support = 1 (32-bit) > unmaskirq = 1 (on) > using_dma = 1 (on) > keepsettings = 0 (off) > readonly = 0 (off) > readahead = 256 (on) > geometry = 16383/255/63, sectors = 234493056, start = 0 > > not this: > hdparm /dev/hda > > /dev/hda: > multcount = 0 (off) > IO_support = 0 (default 16-bit) > unmaskirq = 0 (off) > using_dma = 1 (on) > keepsettings = 0 (off) > readonly = 0 (off) > readahead = 256 (on) > geometry = 16383/255/63, sectors = 234493056, start = 0 Only problem is these are SATA drives and they don't tell me much compared to EIDE drives when using hdparm. Also their error messages running hdparm are a bit of a concern, although typical from what I've read. lightning ~ # hdparm /dev/sda /dev/sda: IO_support = 0 (default 16-bit) readonly = 0 (off) readahead = 256 (on) geometry = 30401/255/63, sectors = 250059350016, start = 0 lightning ~ # lightning ~ # hdparm -tT /dev/sda /dev/sda: Timing cached reads: 2040 MB in 2.00 seconds = 1018.12 MB/sec HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device Timing buffered disk reads: 198 MB in 3.02 seconds = 65.62 MB/sec HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device lightning ~ # Thanks, Mark -- gentoo-amd64@gentoo.org mailing list