From mboxrd@z Thu Jan  1 00:00:00 1970
From: A. Geisreiter <ageisreiter@dh-electronics.de>
Date: Fri, 22 Jan 2010 15:57:37 +0100
Subject: [U-Boot] Performance problems with gunzip
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Hi Detlev,

thanks for the fast response. How do I enable data caches? 

Regards,
Andreas

-----Urspr?ngliche Nachricht-----
Von: Detlev Zundel [mailto:dzu at denx.de] 
Gesendet: Freitag, 22. Januar 2010 15:45
An: A. Geisreiter
Cc: u-boot at lists.denx.de
Betreff: Re: [U-Boot] Performance problems with gunzip

Hi Andreas,

> I try to unzip a WinCE kernel with the U-Boot gunzip routine. It is
working,
> but it takes roughly 1min to uncompress a 10MB zip file. 
> I am working with a PXA270 platform. What could be the reason for the
worst
> performance? 

Very likely the disabled instruction and data caches.  Not that I know
for sure, but I'm pretty confident that either both or at least the data
cache is not enabled per default.

There was some discussion about enabling them, but the work never got
done IIRC.

Cheers
  Detlev

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