X-Git-Url: http://git.cascardo.eti.br/?p=cascardo%2Fovs.git;a=blobdiff_plain;f=INSTALL.DPDK.md;h=b33f75e3c0dcde940545cbc9e738ca848c273be3;hp=dca79bd35dc6a1110edf4b1e793da94d7898522b;hb=0bf765f753fd6cfde4918be49474fcd20659ceaa;hpb=d0a46cb4608e632f5028034762f0adde2ce947a0

diff --git a/INSTALL.DPDK.md b/INSTALL.DPDK.md
index dca79bd35..b33f75e3c 100644
--- a/INSTALL.DPDK.md
+++ b/INSTALL.DPDK.md
@@ -207,6 +207,26 @@ Using the DPDK with ovs-vswitchd:
    ./ovs-ofctl add-flow br0 in_port=2,action=output:1
    ```
 
+8. QoS usage example
+
+   Assuming you have a vhost-user port transmitting traffic consisting of
+   packets of size 64 bytes, the following command would limit the egress
+   transmission rate of the port to ~1,000,000 packets per second:
+
+   `ovs-vsctl set port vhost-user0 qos=@newqos -- --id=@newqos create qos
+   type=egress-policer other-config:cir=46000000 other-config:cbs=2048`
+
+   To examine the QoS configuration of the port:
+
+   `ovs-appctl -t ovs-vswitchd qos/show vhost-user0`
+
+   To clear the QoS configuration from the port and ovsdb use the following:
+
+   `ovs-vsctl destroy QoS vhost-user0 -- clear Port vhost-user0 qos`
+
+   For more details regarding egress-policer parameters please refer to the
+   vswitch.xml.
+
 Performance Tuning:
 -------------------