From: Detlev Zundel <dzu@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] Performance problems with gunzip
Date: Fri, 22 Jan 2010 15:45:22 +0100 [thread overview]
Message-ID: <m24omedwql.fsf@ohwell.denx.de> (raw)
In-Reply-To: <000301ca9b6b$ad2c7ba0$078572e0$@de> (A. Geisreiter's message of "Fri, 22 Jan 2010 15:03:27 +0100")
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
--
Mit einem Leben wie dem meinen, Doktor - wer braucht da noch Traeume?
- Alex Portnoy
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de
next prev parent reply other threads:[~2010-01-22 14:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-22 14:03 [U-Boot] Performance problems with gunzip A. Geisreiter
2010-01-22 14:45 ` Detlev Zundel [this message]
2010-01-22 14:57 ` A. Geisreiter
2010-01-22 15:20 ` Detlev Zundel
2010-01-22 15:45 ` Alessandro Rubini
2010-01-22 16:03 ` Detlev Zundel
2010-01-23 1:33 ` Alessandro Rubini
2010-01-25 9:10 ` A. Geisreiter
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