Qat Zstd Compressor

Qat zstd compressor provides Envoy with faster hardware-accelerated zstd compression by integrating with Intel® QuickAssist Technology (Intel® QAT) through the qatlib and QAT-ZSTD-Plugin libraries.

Example configuration

An example for Qat zstd compressor configuration is:

compressor_library:
  name: text_optimized
  typed_config:
    "@type": type.googleapis.com/envoy.extensions.compression.zstd.compressor.v3.Zstd
    compression_level: 10
    enable_qat_zstd: true
    qat_zstd_fallback_threshold: 0

How it works

If enabled, the Qat zstd compressor will:

• attach Qat hardware

• create Threadlocal Qat zstd context for each worker thread

When a new http request comes, one worker thread will process it using its Qat zstd context and send the data needed to be compressed to Qat hardware using standard zstd api.

Installing and using QAT-ZSTD-Plugin

For information on how to build/install and use QAT-ZSTD-Plugin see introduction.