collectd/collectd — pull request #873 by arielshaqed (2014-12-21 08:58:52+00:00)
Title: Support reading per-connection TCP stats (RTT) from Linux kernel tcp_diag

The Linux tcp_diag module supports reading additional fields from the host TCP stacks. This patch adds the ability to read the per-connection ("smoothed") RTT value from the reported tcp_info struct.

RTT is typically read at short intervals. This patch also batches value_list reporting, to allow a future batched reporting API.