From 9e0861e1b05fa88d2b6567b153a31759545e3a82 Mon Sep 17 00:00:00 2001
From: Paul David <paul.david@ettus.com>
Date: Tue, 5 Apr 2016 10:12:56 -0700
Subject: docs: Updated linux transport documentation on tuning NICs

---
 host/docs/transport.dox | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'host/docs/transport.dox')

diff --git a/host/docs/transport.dox b/host/docs/transport.dox
index 72d59fb2a..ab163341d 100644
--- a/host/docs/transport.dox
+++ b/host/docs/transport.dox
@@ -95,6 +95,18 @@ values, run the following commands: :
 
 Set the values permanently by editing `/etc/sysctl.conf`.
 
+It is also possible to tune the network interface controller (NIC)
+by using ethtool. Increasing the number of descriptors for TX or RX can
+dramatically boost performance on some hosts.
+
+To change the number of TX/RX descriptors, run the following command:
+
+    sudo ethtool -G <interface> tx <N> rx <N>
+
+One can query the maximums and current settings with the following command:
+
+    ethtool -g <interface>
+
 \subsection transport_udp_windows Windows specific notes
 
 <b>UDP send fast-path:</b> It is important to change the default UDP
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