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SQZ Compression Library


Microtal’s SQZ library is an ultra fast, robust, data compressor and decompressor. The SQZ library was designed to optimize compression speed for applications that process large amounts of data.   Applications may improve storage costs and network bandwidth utilization by a factor of 2x-4x by using data-compression.  Most compression algorithms are designed to optimize compression-ratio and not speed.   As a result, it is impractical to compress terabytes (even gigabytes) of data using the popular algorithms (e.g. gzip, bzip) because they are too slow.  SQZ on the other hand is optimized for performance and is used in large commercial networks by several several storage-management vendors.

SQZ Compression ratio is about 2.5:1 for a mix of ASCII and binary files, and is similar to the compression-ratio of the better compression algorithms.  SQZ is much faster.   For example, SQZ compression and decompression speeds are 4.6 and 3.5 times faster than Unix-compress, respectively. 


  • Speed (3-4 times faster than standard compression algorithms)
  • 2.5-4.0 compression ratios for regular files and database
  • Endian neutral
  • Multi-threading safe
  • Low memory footprint
  • Implemented in C


  • Windows
  • Linux
  • Solaris
  • HPUX
  • AIX
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