Re: [RFC PATCH] UBIFS - new flash file system

From: JÃrn Engel
Date: Mon Mar 31 2008 - 09:21:16 EST


On Mon, 31 March 2008 15:47:05 +0300, Adrian Hunter wrote:
> >
> >And how does it compare to logfs?
>
> We don't know a lot about logfs, so you will really have to make
> your own comparison. However our general impressions are as follows:
>
> 1. In our testing logfs file operations seem to be much slower,
> see http://osl.sed.hu/wiki/ubifs/index.php/IOzone

Shiny numbers! Performance has improved significantly in the last six
month. Still worth a closer look.

> 3. logfs does not seem to have bad-block handling.

Bad blocks at mkfs time are handled, blocks turning bad later on aren't
yet.

> 4. logfs does not seem to have wear-leveling.

It does.

JÃrn

--
Fools ignore complexity. Pragmatists suffer it.
Some can avoid it. Geniuses remove it.
-- Perlis's Programming Proverb #58, SIGPLAN Notices, Sept. 1982
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