From 2de0fa2fe38758fa6ec010611176822ea5327a58 Mon Sep 17 00:00:00 2001
From: Daniel Micay <daniel.micay@grapheneos.org>
Date: Sun, 6 Aug 2023 23:43:06 -0400
Subject: [PATCH] document disabling split-gso for high link speeds

---
 static/articles/server-traffic-shaping.html | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/static/articles/server-traffic-shaping.html b/static/articles/server-traffic-shaping.html
index f38dac95..0b5e3694 100644
--- a/static/articles/server-traffic-shaping.html
+++ b/static/articles/server-traffic-shaping.html
@@ -228,6 +228,20 @@ PriorityQueueingPreset=besteffort</pre>
                 empty.</p>
             </section>
 
+            <section id="high-link-speed">
+                <h2><a href="#high-link-speed">High link speed</a></h2>
+
+                <p>By default, CAKE splits General Segmentation Offload (GSO) super-packets to
+                reduce latency at the expense of CPU efficiency and throughput. This can create a
+                bottleneck at high link speeds. We've had to disable this on the 2Gbit GrapheneOS
+                update servers.</p>
+
+                <pre>[CAKE]
+Bandwidth=1995M
+PriorityQueueingPreset=besteffort
+SplitGSO=false</pre>
+            </section>
+
             <section id="future">
                 <h2><a href="#future">Future</a></h2>