OpenOnload Downloads


OpenOnload and EnterpriseOnload releases are now available from the Solarflare support site, which also provides access to other Solarflare software packages, documentation and support. You can also download OpenOnload packages below.

The latest release is openonload-201811-u1, released on 2019/07/02. This is an update release with many bug fixes, a couple of minor new features and support for the latest Linux kernel versions. Please read the release notes and change log.

Older releases

Browse previous public OpenOnload releases here.


The following documents are all available from

Benchmarking tools


sfnettest is a suite of tools developed by Solarflare for probing network performance on Linux, Solaris, FreeBSD and MacOSX.

Download sfnettest-1.5.0.tgz.


sysjitter is a tool that measures the jitter experienced by user-level threads running on each CPU core of a computer. Such jitter may be caused by interrupts, OS threads, system management interrupts or other processes on the system.

Download sysjitter-1.4.tgz.