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Date: Wed, 9 Nov 2011 12:09:48 +0100
From: Matthieu CASTET <matthieu.castet@parrot.com>
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Subject: Re: [PATCH 1/3] Add the snappy-c compressor to lib
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Cc: Andi Kleen <ak@linux.intel.com>,
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Hi,

Artem Bityutskiy a écrit :
> On Sun, 2011-10-30 at 14:37 +0200, Artem Bityutskiy wrote:
>> From: Andi Kleen <ak@linux.intel.com>
>>
>> This is a C port of the google snappy compressor. It has roughly
>> comparable compression to LZO, but is significantly faster on many file
>> types. For example it beats all other compressors on already
>> compressed data.
> 
> Sounds cool, thanks Andi! Is any UBIFS user interested to try this out?
> I think this stuff needs some real users to make it go into mainline
> smoothly.
> 
I could be interresting to have benchmarks on arm (or other system where UBIFS
is used).

snappy use lot's of unaligned access.
They need to be emulated on pre-armv6 core.
And even in newer core (armv6+), u64 unaligned access are not supported.

Matthieu