Date: Mon, 31 May 1999 08:56:14 -0700 From: Kent Stewart <kstewart@3-cities.com> To: Riccardo Veraldi <riccardo@righi.ml.org> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: 32-bit filesystem Message-ID: <3752B11E.E96825DC@3-cities.com> References: <Pine.BSF.4.10.9905311216550.1498-100000@righi.ml.org>
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Riccardo Veraldi wrote: > > Hello, > I would like to know if FreeBSD has 32-bit disk access for default or if > I need to enable some other option in the configuration kernel file before > compiling it with 32 bit support for disk access. It isn't turned on by default; however, you can turn it on by doing a configuration at boot (boot -c). I add "flags 0xa0ffa0ff" to my wdc0 and wdc1 lines in my kernel configuration file. Examples are in the LINT file for wdc2. Changing it at boot lets you see the effect without regenerating the kernel. The transfer rate from my 13GB Maxtor UDMA 33 drive as determined by an "iozone 180" went from 3.8xMB/s to 11+MB/s on writes and 14+MB/s on reads. That is a significant difference. Kent > > thanks > > Rick > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- Kent Stewart Richland, WA mailto:kstewart@3-cities.com http://www.3-cities.com/~kstewart/index.html SETI (Search for Extraterrestrial Intelligence) @ Home http://setiathome.ssl.berkeley.edu/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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