From 6488e116c3969ba8478546254f924591dcab55e5 Mon Sep 17 00:00:00 2001 From: Qiaowei Ren Date: Tue, 25 Aug 2020 10:36:06 +0800 Subject: [PATCH] doc: update QATzip doc for removing snappy and lz4 support This patch update the documentation about QAT acceleration for encryption and compression. QATZip provide the interfaces for several compression algorithm, including deflate, snapp and lz4, but currently only deflate can be accelerated by QAT hardware. Signed-off-by: Qiaowei Ren --- doc/radosgw/qat-accel.rst | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/doc/radosgw/qat-accel.rst b/doc/radosgw/qat-accel.rst index 40d534f4b5981..4e661c63d0154 100644 --- a/doc/radosgw/qat-accel.rst +++ b/doc/radosgw/qat-accel.rst @@ -38,8 +38,8 @@ The driver package can be downloaded from `Intel Quickassist Technology`_. 2. The implementation for QAT based encryption is directly base on QAT API which is included the driver package. But QAT support for compression depends on QATzip project, which is a user space library which builds on top of the QAT - API. QATZip can support several compression algorithm, including deflate, - snappy, lz4, etc.. + API. Currently, QATzip speeds up gzip compression and decompression at the + time of writing. See `QATzip`_. @@ -62,10 +62,10 @@ As mentioned above, QAT support for compression is based on QATzip library in user space, which is designed to take full advantage of the performance provided by QuickAssist Technology. Unlike QAT based encryption, QAT based compression is supported through a tool class for QAT acceleration rather than a compressor -plugin. The common tool class will be shared among zip, snappy, lz4 compressor -plugins, and can transparently accelerate the existing compression types. So -user is allowed to use it to speed up the existing compression types as long as -the QAT hardware is available and QAT is capable to handle them. +plugin. The common tool class can transparently accelerate the existing compression +types, but only zlib compressor can be supported at the time of writing. So +user is allowed to use it to speed up zlib compressor as long as the QAT +hardware is available and QAT is capable to handle it. Configuration ============= -- 2.39.5