dist-docs: Install plaintext files properly.

[cascardo/ovs.git] / INSTALL.DPDK.md

diff --git a/INSTALL.DPDK.md b/INSTALL.DPDK.md
index c601358..d892788 100644 (file)
--- a/INSTALL.DPDK.md
+++ b/INSTALL.DPDK.md
@@ -294,9 +294,9 @@ Performance Tuning:
 
   3. DPDK port Rx Queues
 
-       `ovs-vsctl set Open_vSwitch . other_config:n-dpdk-rxqs=<integer>`
+       `ovs-vsctl set Interface <DPDK interface> options:n_rxq=<integer>`
 
-       The command above sets the number of rx queues for each DPDK interface.
+       The command above sets the number of rx queues for DPDK interface.
        The rx queues are assigned to pmd threads on the same NUMA node in a
        round-robin fashion.  For more information, please refer to the
        Open_vSwitch TABLE section in
@@ -567,6 +567,25 @@ Follow the steps below to attach vhost-user port(s) to a VM.
    -numa node,memdev=mem -mem-prealloc
    ```
 
+3. Optional: Enable multiqueue support
+   The vhost-user interface must be configured in Open vSwitch with the
+   desired amount of queues with:
+
+   ```
+   ovs-vsctl set Interface vhost-user-2 options:n_rxq=<requested queues>
+   ```
+
+   QEMU needs to be configured as well.
+   The $q below should match the queues requested in OVS (if $q is more,
+   packets will not be received).
+   The $v is the number of vectors, which is '$q x 2 + 2'.
+
+   ```
+   -chardev socket,id=char2,path=/usr/local/var/run/openvswitch/vhost-user-2
+   -netdev type=vhost-user,id=mynet2,chardev=char2,vhostforce,queues=$q
+   -device virtio-net-pci,mac=00:00:00:00:00:02,netdev=mynet2,mq=on,vectors=$v
+   ```
+
 DPDK vhost-cuse:
 ----------------