Zstd v1.4.5

Hello

A new zstd version is out a few days ago

Zstd v1.4.5 Release Notes

This is a fairly important release which includes performance improvements and new major CLI features. It also fixes a few corner cases, making it a recommended upgrade.

Faster Decompression Speed
Decompression speed has been improved again, thanks to great contributions from @terrelln.
As usual, exact mileage varies depending on files and compilers.
For x64 cpus, expect a speed bump of at least +5%, and up to +10% in favorable cases.
ARM cpus receive more benefit, with speed improvements ranging from +15% vicinity, and up to +50% for certain SoCs and scenarios (ARM‘s situation is more complex due to larger differences in SoC designs).

For illustration, some benchmarks run on a modern x64 platform using zstd -b compiled with gcc v9.3.0 :


v1.4.4 v1.4.5
silesia.tar 1568 MB/s 1653 MB/s
--- --- ---
enwik8 1374 MB/s 1469 MB/s
calgary.tar 1511 MB/s 1610 MB/s
Same platform, using clang v10.0.0 compiler :

---

v1.4.4 v1.4.5
silesia.tar 1439 MB/s 1496 MB/s
--- --- ---
enwik8 1232 MB/s 1335 MB/s
calgary.tar 1361 MB/s 1457 MB/s


More info:
https://github.com/facebook/zstd/releases/tag/v1.4.5