From: Victor Julien <vjulien@oisf.net>
Date: Thu, 7 Dec 2023 09:27:41 +0000 (+0100)
Subject: doc/userguide: update guidance on 5 to 6 upgrading
X-Git-Tag: suricata-7.0.7~46
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=32c8a7614d732ab7c9d33ef716d2e42624d202a0;p=thirdparty%2Fsuricata.git

doc/userguide: update guidance on 5 to 6 upgrading

TCP memory use can be higher than expected in certain configs.

Ticket: #6552.
(cherry picked from commit 3456dea276c209b5bf0f95259a42f89d121ada32)
---

diff --git a/doc/userguide/upgrade.rst b/doc/userguide/upgrade.rst
index d7b74a0275..170c95e803 100644
--- a/doc/userguide/upgrade.rst
+++ b/doc/userguide/upgrade.rst
@@ -183,6 +183,12 @@ Removals
   if this behavior is still required. See :ref:`multiple-eve-instances`.
 - Unified2 has been removed. See :ref:`unified2-removed`.
 
+Performance
+~~~~~~~~~~~
+- In YAML files w/o a `flow-timeouts.tcp.closed` setting, the default went from 0 to 10 seconds.
+  This may lead to higher than expected TCP memory use:
+  https://redmine.openinfosecfoundation.org/issues/6552
+
 Upgrading 4.1 to 5.0
 --------------------