Re: compression disk space saving - what are your results?

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>> On a side note, I really wish BTRFS would just add LZ4 support.  It's a
>> lot more deterministic WRT decompression time than LZO, gets a similar
>> compression ratio, and runs faster on most processors for both
>> compression and decompression.

Relative ratios according to
http://catchchallenger.first-world.info//wiki/Quick_Benchmark:_Gzip_vs_Bzip2_vs_LZMA_vs_XZ_vs_LZ4_vs_LZO

Compressed size
gzip (1) - lzo (1.4) - lz4 (1.4)

Compression Time
gzip (5) - lzo (1) - lz4 (0.8)

Decompression Time
gzip (9) - lzo (4) - lz4 (1)

Compression Memory
gzip (1) - lzo (2) - lz4 (20)

Decompression Memory
gzip (1) - lzo (2) - lz4 (130). Yes 130! not a typo.

But there is a note:
Note: lz4 it's the program using this size, the
code for internal lz4 use very less memory.

However, I could not find any better apples to apples
comparison.

If lz4's real memory consumption is in orders of lzo,
than it looks good.
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