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-rw-r--r--docs-xml/smbdotconf/tuning/socketoptions.xml17
1 files changed, 17 insertions, 0 deletions
diff --git a/docs-xml/smbdotconf/tuning/socketoptions.xml b/docs-xml/smbdotconf/tuning/socketoptions.xml
index 7a5c221939..27ae5fd32b 100644
--- a/docs-xml/smbdotconf/tuning/socketoptions.xml
+++ b/docs-xml/smbdotconf/tuning/socketoptions.xml
@@ -4,6 +4,23 @@
developer="1"
xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
<description>
+ <para>
+ <warning>
+ <para>Modern server operating systems are tuned for high
+ network performance in the majority of situations; when you set socket
+ options you are overriding those settings. Linux in particular has an
+ auto-tuning mechanism for buffer sizes that will be disabled if you
+ specify a socket buffer size. This can potentially cripple your
+ TCP/IP stack.</para>
+
+ <para> Getting the socket options correct can make a big difference to
+ your performance, but getting them wrong can degrade it by just as
+ much. As with any other low level setting, if you must make changes
+ to it, make small changes and <emphasis>test</emphasis> the effect
+ before making any large changes.</para>
+ </warning>
+ </para>
+
<para>This option allows you to set socket options
to be used when talking with the client.</para>