LZ4 compression speed on single core

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Alex

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Mar 25, 2020, 9:17:45 PM3/25/20

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Hello all!

Do you know how fast the lz4 is?
I tried to do lz4 with-1 option (to be the fastest) but I couldn't get a higher speed than 121MB / s, but as you can see in the table below, some people get a higher speed!
I was wondering why that's happening?

Or do they use a multi thread?

Compression level comparison :
In-memory benchmark using lzbench, on the Silesia Corpus
Benchmark platform : Core i7-3930K @ 4.5GHz, Linux 64-bits, gcc v6.2

Compression / Thread	Ratio	Speed	Decoding
LZ4 Fast 8	1.799	911 MB/s	3.36 GB/s
LZ4 default	2.101	625 MB/s	3.22 GB/s
LZ4 HC 9	2.720	34 MB/s	3.24 GB/s

Cyan

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Mar 26, 2020, 12:03:36 AM3/26/20

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What is your system ? Which cpu ?

Also, which version of LZ4 are you running ?

Alex

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Mar 26, 2020, 2:49:00 PM3/26/20

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It's actually 40 core xeon e5-2650 be @ 2.30 GHz processor

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