Subject: Re: cluster waste?
To: NetBSD Users <netbsd-users@NetBSD.org>
From: Ignatios Souvatzis <ignatios@cs.uni-bonn.de>
List: netbsd-users
Date: 03/18/2004 15:12:07
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Hi,

On Thu, Mar 18, 2004 at 09:04:07AM -0500, Steven M. Bellovin wrote:

> Has anyone revalidated those numbers for modern disks?  When FFS first=20
> came out, there was a lot of talk about rotational optimizations,=20
> staying within the cylinder, etc.  Nowadays, of course, that's all=20
> mythical. =20

Different problem, I think. As far as I recall, the "find block" algorithm
uses a hash function, and thus gets ineffective if the table is too full.

I don't know whether the 4.4BSD cylinder group design affects this.

	-is

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