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updated benchmark for v1.5.1

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answers #2764
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Yann Collet 2021-12-16 04:46:21 -08:00
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@ -32,8 +32,8 @@ a list of known ports and bindings is provided on [Zstandard homepage](http://ww
## Benchmarks
For reference, several fast compression algorithms were tested and compared
on a server running Arch Linux (`Linux version 5.5.11-arch1-1`),
with a Core i9-9900K CPU @ 5.0GHz,
on a desktop running Ubuntu 20.04 (`Linux 5.11.0-41-generic`),
with a Core i7-9700K CPU @ 4.9GHz,
using [lzbench], an open-source in-memory benchmark by @inikep
compiled with [gcc] 9.3.0,
on the [Silesia compression corpus].
@ -44,25 +44,24 @@ on the [Silesia compression corpus].
| Compressor name | Ratio | Compression| Decompress.|
| --------------- | ------| -----------| ---------- |
| **zstd 1.4.5 -1** | 2.884 | 500 MB/s | 1660 MB/s |
| zlib 1.2.11 -1 | 2.743 | 90 MB/s | 400 MB/s |
| brotli 1.0.7 -0 | 2.703 | 400 MB/s | 450 MB/s |
| **zstd 1.4.5 --fast=1** | 2.434 | 570 MB/s | 2200 MB/s |
| **zstd 1.4.5 --fast=3** | 2.312 | 640 MB/s | 2300 MB/s |
| quicklz 1.5.0 -1 | 2.238 | 560 MB/s | 710 MB/s |
| **zstd 1.4.5 --fast=5** | 2.178 | 700 MB/s | 2420 MB/s |
| lzo1x 2.10 -1 | 2.106 | 690 MB/s | 820 MB/s |
| lz4 1.9.2 | 2.101 | 740 MB/s | 4530 MB/s |
| **zstd 1.4.5 --fast=7** | 2.096 | 750 MB/s | 2480 MB/s |
| lzf 3.6 -1 | 2.077 | 410 MB/s | 860 MB/s |
| snappy 1.1.8 | 2.073 | 560 MB/s | 1790 MB/s |
| **zstd 1.5.1 -1** | 2.887 | 530 MB/s | 1700 MB/s |
| [zlib] 1.2.11 -1 | 2.743 | 95 MB/s | 400 MB/s |
| brotli 1.0.9 -0 | 2.702 | 395 MB/s | 450 MB/s |
| **zstd 1.4.5 --fast=1** | 2.437 | 600 MB/s | 2150 MB/s |
| **zstd 1.4.5 --fast=3** | 2.239 | 670 MB/s | 2250 MB/s |
| quicklz 1.5.0 -1 | 2.238 | 540 MB/s | 760 MB/s |
| **zstd 1.4.5 --fast=4** | 2.148 | 710 MB/s | 2300 MB/s |
| lzo1x 2.10 -1 | 2.106 | 660 MB/s | 845 MB/s |
| [lz4] 1.9.3 | 2.101 | 740 MB/s | 4500 MB/s |
| lzf 3.6 -1 | 2.077 | 410 MB/s | 830 MB/s |
| snappy 1.1.9 | 2.073 | 550 MB/s | 1750 MB/s |
[zlib]: http://www.zlib.net/
[LZ4]: http://www.lz4.org/
[lz4]: http://www.lz4.org/
The negative compression levels, specified with `--fast=#`,
offer faster compression and decompression speed in exchange for some loss in
compression ratio compared to level 1, as seen in the table above.
offer faster compression and decompression speed
at the cost of compression ratio (compared to level 1).
Zstd can also offer stronger compression ratios at the cost of compression speed.
Speed vs Compression trade-off is configurable by small increments.