Dell Brocade Adapters - Manual (Page 250)

222 Brocade Adapters Installation and Reference Manual
53-1002144-01
Network driver parameters
A
You can use ethtool to obtain hardware statistics to verify traffic over different receive and transmit
queues. You can also use the VMware vsish utility to display current NetQueue information, such as
maximum number of queues, number of active queues, and default queue identification.
Use the following example procedures to enable or disable NetQueue, change the number of
NetQueues and filters, and to set system heap values appropriately for using NetQueue and jumbo
frames.
Enable or disable NetQueue with VI Client screens
Following is an example of using VI Client configuration screens to enable and disable NetQueue.
Enable NetQueue in VMkernel using the VI Client as follows.
1. Log in to the VI Client.
2. Click the Configuration tab for the Server host.
3. Click Advanced Settings.
4. Click VMkernel.
5. Select the check box for VMkernel.Boot.netNetqueueEnabled, then click OK.
6. Reboot the server.
Disable NetQueue in VMkernel using the VI Client as follows.
1. Log in to the VI Client.
2. Click the Configuration tab for the Server host.
3. Click Advanced Settings.
4. Click VMkernel.
5. Select the checkbox for VMkernel.Boot.netNetqueueDisabled, then click OK.
6. Reboot the server.
NOTE
For more information on using this command, refer to your VMware system documentation on
enabling NetQueue in VMware 4.0.
Managing the number of NetQueues and filters with cfg
For the Brocade driver, you cannot directly configure the number of NetQueues and filters per
NetQueue. By default, these values are based on the number of receive queue sets used, which
are calculated from the number of CPUs in the system. In general, NetQueues and filters per
NetQueue are calculated according to the following guidelines:
• Including the default NetQueue, the number of NetQueues equals the number of CPUs in the
system, or a maximum of 8. When Jumbo frames are enabled, the maximum is 4.
• The number of filters per receive NetQueue is calculated so that hardware resources are
distributed equally to the non-default NetQueues.
Table 40 summarizes NetQueues and Receive Filters per NetQueue values per number of CPUs for
CNA models.