Re: Block fragments in ext2

From: Alexander Viro (viro@math.psu.edu)
Date: Tue Apr 18 2000 - 07:09:51 EST


On Tue, 18 Apr 2000, Stephen C. Tweedie wrote:

> Hi,
>
> On Tue, Apr 18, 2000 at 04:10:23AM +0000, Justin Hopkins wrote:
> >
> > My main question is this: Are block fragments essentially deprecated?
>
> Yes. The ext2 block allocation algorithms are a lot better than those
> in the original FFS, and we can get good performance with smaller block
> sizes.

Stephen, I seriously suspect that larger allocation block sizes would
buys us a better speed. Reason: allocation algorithms in Linux ext2 and
FreeBSD UFS implementations are very similar. Ditto for layouts, indeed.
And on FreeBSD 16Kb blocks give visible win over the 4Kb ones.

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