From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Korsgaard Date: Thu, 19 Nov 2009 15:51:02 +0100 Subject: [U-Boot] [PATCH RFC] zlib: Optimize decompression In-Reply-To: (Joakim Tjernlund's message of "Thu\, 19 Nov 2009 15\:32\:29 +0100") References: <1258633364-20805-1-git-send-email-Joakim.Tjernlund@transmode.se> <87einuip67.fsf@macbook.be.48ers.dk> Message-ID: <87aayiin55.fsf@macbook.be.48ers.dk> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de >>>>> "Joakim" == Joakim Tjernlund writes: Hi, >> On a mpc8347 board it's ~12% faster at decompressing the uImage (165ms). >> Joakim> Signed-off-by: Joakim Tjernlund >> >> Acked-by: Peter Korsgaard Joakim> Thanks, question: How does this compare with your lzo uncompress? Lzo is still slightly faster, but it only about ~5% (60ms). This is at 400MHz with very slow flash. With slower cpu/faster flash the difference would probably be bigger (it certainly was when I compared with zlib before your optimization). I can rerun that test, but first I need to figure out why 2009.11-rc1 is more than 1 second slower than 2009.08. -- Bye, Peter Korsgaard