1. Compression Device Supported Functionality Matrices

1.1. Supported Feature Flags

Table 1.8 Features availability in compression drivers
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  
OOP SGL In LB Out Y     Y  
OOP LB In SGL Out Y     Y  
Deflate Y Y Y Y Y
LZS          
Adler32 Y Y   Y  
Crc32 Y Y   Y  
Adler32&Crc32   Y   Y  
Fixed Y Y Y Y Y
Dynamic Y Y Y Y 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.