From: Ondřej Surý <ondrej@isc.org>
Date: Tue, 13 Jul 2021 08:10:16 +0000 (+0200)
Subject: Add CHANGES and release notes for [GL #2822]
X-Git-Tag: v9.17.17~27^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=41afe6bc5e753d97b5548f22612fcf31760c2dcd;p=thirdparty%2Fbind9.git

Add CHANGES and release notes for [GL #2822]
---

diff --git a/CHANGES b/CHANGES
index 665e1803a9d..1fefabdb181 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,5 @@
+5679.	[bug]		Disable setting the thread affinity. [GL #2822]
+
 5678.	[bug]		The "check DS" code failed to release all resources upon
 			named shutdown when a refresh was in progress. This has
 			been fixed. [GL #2811]
diff --git a/doc/notes/notes-current.rst b/doc/notes/notes-current.rst
index b337129c16d..4a1586c40e2 100644
--- a/doc/notes/notes-current.rst
+++ b/doc/notes/notes-current.rst
@@ -81,3 +81,12 @@ Bug Fixes
 
 - Fix a race condition where two threads are competing for the same set of key
   file locks, that could lead to a deadlock. This has been fixed. :gl:`#2786`
+
+- Testing revealed that setting the thread affinity on both the netmgr
+  and netthread threads led to inconsistent recursive performance, as
+  sometimes the netmgr and netthread threads competed over a single
+  resource.
+
+  When the affinity is not set, tests show a slight dip in the authoritative
+  performance of around 5% (ranging from 3.8% to 7.8%), but
+  the recursive performance is now consistently improved. :gl:`#2822`