*BSD News Article 65474


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From: rob@pe1chl.ampr.org (Rob Janssen)
Subject: Re: Why to not buy Matrox Millennium
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References: <4jn4qp$6p@darkstar.my.lan> <4k0m0f$68j@hoopoe.psc.edu> <4k0r5l$g2@siberia.gtri.gatech.edu> <4k3rha$m9t@clark.net> <4k3scl$qc9@hoopoe.psc.edu> <316617F4.2781E494@FreeBSD.org>
Date: Sat, 6 Apr 1996 21:36:20 GMT
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In <316617F4.2781E494@FreeBSD.org> "Jordan K. Hubbard" <jkh@FreeBSD.org> writes:

>Peter Berger wrote:
>> Linux uses asynchronous metadata updates, which the *BSD crowd has
>> always insisted puts you at a greater risk of losing data in the
>> event of a crash.  My understanding is that FreeBSD will be making
>> this an option...whether async metadata updates are an improvement
>> or not depends on your needs.  I certainly will like having the
>> option, anyway.

>This is already the case in 2.2 (and has been retrofitted into
>2.1-stable, from which the next mainstream release will be derived).
>You can tweak the bit on and off for a given filesystem and visually see
>the difference as something like a large tar file extracts - it's quite
>impressive.  Simply:

>	mount -u -o async /some/existing/fs

>To turn it on for a filesystem that's already mounted, or live a little
>more dangerously and add it to the filesystem options in /etc/fstab.

>The installation (sysinstall) is one area where the new async feature is
>used - all filesystems are initially mounted async during extraction of
>the release since if the power goes out during installation you can
>simply install again.  The increase in installation speed is strikingly
>noticable!

There is no need to convince us (the Linux crowd), we have already
lived with this increased speed for nearly 4 years!

Rob
-- 
+------------------------------------+--------------------------------------+
| Rob Janssen         rob@knoware.nl | BBS: +31-302870036 (2300-0730 local) |
| AMPRnet:       rob@pe1chl.ampr.org | AX.25 BBS: PE1CHL@PI8WNO.#UTR.NLD.EU |
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