X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=INSTALL.DPDK.md;h=dca79bd35dc6a1110edf4b1e793da94d7898522b;hb=12878bc422712ec2bc602819641d4da2555c37c3;hp=a19a68576d9b3ef771d496514277bd24e38c8799;hpb=de658847fd5703ac7ac6413ec29ecf7f4db91421;p=cascardo%2Fovs.git

diff --git a/INSTALL.DPDK.md b/INSTALL.DPDK.md
index a19a68576..dca79bd35 100644
--- a/INSTALL.DPDK.md
+++ b/INSTALL.DPDK.md
@@ -272,9 +272,12 @@ Performance Tuning:
 
 	NIC port0 <-> OVS <-> VM <-> OVS <-> NIC port 1
 
-	The OVS log can be checked to confirm that the port/rxq assignment to
-	pmd threads is as required. This can also be checked with the following
-	commands:
+	The following command can be used to confirm that the port/rxq assignment
+	to pmd threads is as required:
+
+	`ovs-appctl dpif-netdev/pmd-rxq-show`
+
+	This can also be checked with:
 
 	```
 	top -H
@@ -508,7 +511,8 @@ Adding DPDK vhost-user ports to the Switch:
 
 Following the steps above to create a bridge, you can now add DPDK vhost-user
 as a port to the vswitch. Unlike DPDK ring ports, DPDK vhost-user ports can
-have arbitrary names.
+have arbitrary names, except that forward and backward slashes are prohibited
+in the names.
 
   -  For vhost-user, the name of the port type is `dpdkvhostuser`
 
@@ -586,6 +590,22 @@ Follow the steps below to attach vhost-user port(s) to a VM.
    -device virtio-net-pci,mac=00:00:00:00:00:02,netdev=mynet2,mq=on,vectors=$v
    ```
 
+   If one wishes to use multiple queues for an interface in the guest, the
+   driver in the guest operating system must be configured to do so. It is
+   recommended that the number of queues configured be equal to '$q'.
+
+   For example, this can be done for the Linux kernel virtio-net driver with:
+
+   ```
+   ethtool -L <DEV> combined <$q>
+   ```
+
+   A note on the command above:
+
+   `-L`: Changes the numbers of channels of the specified network device
+
+   `combined`: Changes the number of multi-purpose channels.
+
 DPDK vhost-cuse:
 ----------------