From 07845d2f595ca4b4d0527cbe2140b18b959da8d0 Mon Sep 17 00:00:00 2001
From: David Wilson <dw@botanicus.net>
Date: Fri, 7 Sep 2018 22:53:26 +0100
Subject: [PATCH] docs: update changelog.

---
 docs/changelog.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/docs/changelog.rst b/docs/changelog.rst
index a60f5319..326f15d9 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -58,6 +58,14 @@ Enhancements
   synchronization, wasting significant runtime in the connection multiplexer.
   In one case work was reduced by 95%, which may manifest as faster runs.
 
+* `5189408e <https://github.com/dw/mitogen/commit/5189408e>`_: threads are
+  cooperatively scheduled, minimizing `GIL
+  <https://en.wikipedia.org/wiki/Global_interpreter_lock>`_ contention, and
+  reducing context switching by an order of magnitude. This manifests as an
+  overall improvement, but is easily noticeable on short many-target
+  runs, where startup overhead dominates runtime.
+
+
 Fixes
 ^^^^^