Date: Tue, 8 Feb 2000 10:57:15 -0800 From: "Scott Hess" <scott@avantgo.com> To: "Walter Brameld" <brameld@twave.net>, "John" <freebsd-root@i-zone.demon.co.uk>, <freebsd-questions@freebsd.org> Subject: Re: celeron-smp slow? Message-ID: <00e101bf7266$50e6d900$1e80000a@avantgo.com> References: <389DDEFD.DBB63C7B@home.com> <389DE580.AB5B37F2@3-cities.com> <OoimtdAvWxn4EwyT@i-zone.demon.co.uk> <00020803454401.00302@Bozo_3.BozoLand.domain>
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Add 'async' to the options section of /etc/fstab. Where it was probably just 'rw', now it would be 'rw,async'. WARNING: Async means that if the computer crashes or the power fails, you are much more likely to have fsck problems on reboot. FreeBSD by default wants to force writes of metadata (information about a file) to disk before proceeding, whereas the data in the file can be written out of order as needed to make things efficient. Mounting async means that data and metadata is all written in the most efficient manner - but it also means that metadata may be written out of order or not at all if there is a panic. Put another way, if you don't know what the async option does, you probably shouldn't use it. [Put yet _another_ way... Linux filesystems mount async by default, and you don't hear alot of hue and cry about that. What's the worst that could happen? You'll have to reinstall your system, which might not be that big of a deal.] Later, scott ----- Original Message ----- From: "Walter Brameld" <brameld@twave.net> To: "John" <freebsd-root@i-zone.demon.co.uk>; <freebsd-questions@freebsd.org> Sent: Tuesday, February 08, 2000 12:45 AM Subject: Re: celeron-smp slow? > On Mon, 07 Feb 2000, in a never-ending search for enlightenment, John wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > > Hash: SHA1 > > > > In article <389DE580.AB5B37F2@3-cities.com>, Kent Stewart > > <kstewart@3-cities.com> writes > > >If you are using IDE drives, the flags option on the wdc? controller > > >can really affect how fast netscape loads. I went from 2-3MB/s to > > >14.4MB/s on a benchmark by setting my "flags 0xa0ffa0ff" on the HD's. > > > > hi > > > > just to add to that, it you set the async flag to all partitions (in > > /stc/fstab) apart from swap [1] the (disk i/o) speed improves > > tremendously. > > > > [1] I dunno if it would work on swap. I think it might be a Bad Idea > > (tm) but I dunno the reason... > > - -- > > John > > And how does one do that? > > -- > Walter > > in·tel·lec·tu·al > n. Someone who has been educated past his/her level of intelligence. > If you were wondering, the answer is 42. > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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