X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=vswitchd%2Fvswitch.xml;h=12780d6c1c7370945cc67ec5578535eaa8317d11;hb=7155fa52f0e585eb515ceebf3790d90554bbe18e;hp=47b13d2194b9e7923048b4723064b02de72d58bb;hpb=90967e953f5019299b5b5e2d70f440d82c32e2f1;p=sliver-openvswitch.git
diff --git a/vswitchd/vswitch.xml b/vswitchd/vswitch.xml
index 47b13d219..12780d6c1 100644
--- a/vswitchd/vswitch.xml
+++ b/vswitchd/vswitch.xml
@@ -71,6 +71,93 @@
The Citrix XenServer universally unique identifier for the physical
host as displayed by
+ When
+ This option allows for improvement. When
+ Thus, with this option, the procedure for a hot-upgrade of
+
+ The
+ A number of flows as a nonnegative integer. This sets number of
+ flows at which eviction from the datapath flow table will be
+ triggered. If there are a large number of flows then increasing this
+ value to around the number of flows present can result in reduced CPU
+ usage and packet loss.
+
+ The default is 2500. Values below 100 will be rounded up to 100.
+
+ Specifies userspace behaviour for handling flow misses. This takes
+ precedence over flow-eviction-threshold.
+
+ xe host-list
.
+
+ ovs-vswitchd
starts up, it has an empty flow table
+ and therefore it handles all arriving packets in its default fashion
+ according to its configuration, by dropping them or sending them to
+ an OpenFlow controller or switching them as a standalone switch.
+ This behavior is ordinarily desirable. However, if
+ ovs-vswitchd
is restarting as part of a ``hot-upgrade,''
+ then this leads to a relatively long period during which packets are
+ mishandled.
+ ovs-vswitchd
+ starts with this value set as true
, it will neither
+ flush or expire previously set datapath flows nor will it send and
+ receive any packets to or from the datapath. When this value is
+ later set to false
, ovs-vswitchd
will
+ start receiving packets from the datapath and re-setup the flows.
+ ovs-vswitchd
becomes roughly the following:
+
+
+ ovs-vswitchd
.
+ true
.
+ ovs-vswitchd
.
+ ovs-ofctl
(or some other program, such as an
+ OpenFlow controller) to restore the OpenFlow flow table
+ to the desired state.
+ false
(or remove it entirely from the database).
+ ovs-ctl
's ``restart'' and ``force-reload-kmod''
+ functions use the above config option during hot upgrades.
+
+
+ auto
with-facets
without-facets
- A number of flows as a nonnegative integer. This sets number of - flows at which eviction from the kernel flow table will be triggered. - If there are a large number of flows then increasing this value to - around the number of flows present can result in reduced CPU usage - and packet loss. -
-- The default is 1000. Values below 100 will be rounded up to 100. -
-