From: Peter Korsgaard <jacmet@sunsite.dk>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH RFC] zlib: Optimize decompression
Date: Thu, 19 Nov 2009 15:07:12 +0100 [thread overview]
Message-ID: <87einuip67.fsf@macbook.be.48ers.dk> (raw)
In-Reply-To: <1258633364-20805-1-git-send-email-Joakim.Tjernlund@transmode.se> (Joakim Tjernlund's message of "Thu\, 19 Nov 2009 13\:22\:44 +0100")
>>>>> "Joakim" == Joakim Tjernlund <Joakim.Tjernlund@transmode.se> writes:
Joakim> This patch optimizes the direct copy procedure.
Joakim> Uses get_unaligned() but only in one place.
Joakim> The copy loop just above this one can also use this
Joakim> optimization, but I havn't done so as I have not tested if it
Joakim> is a win there too.
Joakim> On my MPC8321 this is about 17% faster on my JFFS2 root FS
Joakim> than the original. No speed test has been performed in u-boot.
On a mpc8347 board it's ~12% faster at decompressing the uImage (165ms).
Joakim> Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
--
Bye, Peter Korsgaard
next prev parent reply other threads:[~2009-11-19 14:07 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-19 12:22 [U-Boot] [PATCH RFC] zlib: Optimize decompression Joakim Tjernlund
2009-11-19 14:07 ` Peter Korsgaard [this message]
2009-11-19 14:32 ` Joakim Tjernlund
2009-11-19 14:51 ` Peter Korsgaard
2009-12-05 0:32 ` Wolfgang Denk
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