NVIDIA Accelerated IO (XLIO) Documentation Rev 2.0.7 LTS


This is a long-term support (LTS) release. LTS is the practice of maintaining a software product for an extended period of time (up to three years) to help increase product stability. LTS releases include bug fixes and security patches.


The NVIDIA® Accelerated IO (XLIO) SW library boosts the performance of TCP/IP applications based on NGINX (CDN, DoH Etc.) and storage solutions as part of the SPDK. XLIO is a user-space software library that exposes standard socket APIs with kernel-bypass architecture, enabling a hardware-based direct copy between an application’s user-space memory and the network interface.

Coupling XLIO with NVIDIA ConnectX®-6 Dx, NVIDIA ConnectX®-7 or NVIDIA BlueField®-2 data processing unit (DPU) acceleration capabilities provides breakthrough performance of Transport Layer Security (TLS) encryption/decryption. It also enables working with features such as HW LRO/TSO and Striding-RQ which increase TCP performance, without application code changes and using a standard socket API.

XLIO is an open source project - see its repository here.

Further information on this product can be found in the following MLNX_OFED documents:

Document Revision History

For the list of changes made to this document, refer to User Manual Revision History.

© Copyright 2023, NVIDIA. Last updated on Sep 5, 2023.