Date: Tue, 27 Mar 2001 09:18:32 +0100 From: Brian Somers <brian@Awfulhak.org> To: "David E. O'Brien" <obrien@FreeBSD.org> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org, brian@Awfulhak.org Subject: Re: cvs commit: src/sbin/newfs newfs.c Message-ID: <200103270818.f2R8IWw48188@hak.lan.Awfulhak.org> In-Reply-To: Message from "David E. O'Brien" <obrien@FreeBSD.org> of "Mon, 26 Mar 2001 17:34:59 -0800." <200103270134.f2R1Yxj90971@freefall.freebsd.org>
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> obrien 2001/03/26 17:34:59 PST
>
> Modified files:
> sbin/newfs newfs.c
> Log:
> The common wisdom is to use the largest number of cylinders per group.
> So bump the default from `16' to `22', which is the largest value allowed
> with the current default block size. This change increases the the
> group size from 32MB/g to 44MB/g on a 4GB SCSI disk.
Does this increase performance ?
I'm just wondering what sort of threshold is optimum on a modern disk
with a ficticious geometry.... do you have any numbers ?
I would suspect the answer is ``yes performance is better'', but maybe
some more exotic geometry would give more cylinders per group and
even better performance ?
> Revision Changes Path
> 1.33 +5 -4 src/sbin/newfs/newfs.c
--
Brian <brian@Awfulhak.org> <brian@[uk.]FreeBSD.org>
<http://www.Awfulhak.org>; <brian@[uk.]OpenBSD.org>
Don't _EVER_ lose your sense of humour !
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