Socket Visibility to System Tools

Onload User Guide (UG1586)

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1.2 English

With the exception of ‘listening’ sockets, TCP sockets accelerated by Onload are not visible to the netstat tool. UDP sockets are visible to netstat.

Accelerated sockets appear in the /proc directory as symbolic links to /dev/onload. Tools that rely on /proc will probably not identify the associated file descriptors as being sockets. Refer to File Descriptors, Stacks, and Sockets for more details.

Accelerated sockets can be inspected in detail with the Onload onload_stackdump tool, which exposes considerably more information than the regular system tools. For details of onload_stackdump refer to onload_stackdump.