1. Compression Device Supported Functionality Matrices
1.1. Supported Feature Flags
| Feature | i s a l | m l x 5 | o c t e o n t x | q a t | z l i b |
|---|---|---|---|---|---|
| HW Accelerated | Y | Y | Y | ||
| CPU SSE | Y | ||||
| CPU AVX | Y | ||||
| CPU AVX2 | Y | ||||
| CPU AVX512 | Y | ||||
| CPU NEON | |||||
| Stateful Compression | |||||
| Stateful Decompression | Y | ||||
| Pass-through | Y | ||||
| OOP SGL In SGL Out | Y | Y | Y | ||
| OOP SGL In LB Out | Y | Y | Y | ||
| OOP LB In SGL Out | Y | Y | Y | ||
| Deflate | Y | Y | Y | Y | Y |
| LZS | |||||
| LZ4 | Y | ||||
| Adler32 | Y | Y | Y | ||
| Crc32 | Y | Y | Y | ||
| Adler32&Crc32 | Y | Y | |||
| xxHash32 | Y | ||||
| Fixed | Y | Y | Y | Y | Y |
| Dynamic | Y | Y | Y | Y | Y |
| LZ4 Dictionary ID | |||||
| LZ4 Content Checksum | |||||
| LZ4 Content Size | |||||
| LZ4 Block Checksum | Y | ||||
| LZ4 Block Independence | Y |
Note
- “Pass-through” feature flag refers to the ability of the PMD to let input buffers pass-through it, copying the input to the output, without making any modifications to it (no compression done).
- “OOP SGL In SGL Out” feature flag stands for “Out-of-place Scatter-gather list Input, Scatter-gather list Output”, which means PMD supports different scatter-gather styled input and output buffers (i.e. both can consists of multiple segments).
- “OOP SGL In LB Out” feature flag stands for “Out-of-place Scatter-gather list Input, Linear Buffers Output”, which means PMD supports input from scatter-gathered styled buffers, outputting linear buffers (i.e. single segment).
- “OOP LB In SGL Out” feature flag stands for “Out-of-place Linear Buffers Input, Scatter-gather list Output”, which means PMD supports input from linear buffer, outputting scatter-gathered styled buffers.