vswitch.xml: Add caveat to flow-limit.

This option should only be tweaked by developers investigating the
behaviour of flow caching, so recommend that this option is not used.

Signed-off-by: Joe Stringer <joestringer@nicira.com>

diff --git a/vswitchd/vswitch.xml b/vswitchd/vswitch.xml
index aac4bd8..4dbd9e3 100644 (file)
--- a/vswitchd/vswitch.xml
+++ b/vswitchd/vswitch.xml
@@ -145,7 +145,8 @@
           The maximum
           number of flows allowed in the datapath flow table.  Internally OVS
           will choose a flow limit which will likely be lower than this number,
-          based on real time network conditions.
+          based on real time network conditions. Tweaking this value is
+          discouraged unless you know exactly what you're doing.
         </p>
         <p>
           The default is 200000.