Ethernet Support Guide for HP-UX 11i v3

Example 13 Displaying current multiple queue parameter values
To determine the number of queues currently set for a specific device, enter the following command:
nwmgr -g -A drv_mq -c lanppa
Example 14 Setting multiple queues
HP recommends setting multiple queue options permanently so they are saved across reboots.
Edit the driver's configuration file to set the appropriate parameter value to the number of queues
to be used by the driver. The configuration file parameter name is HP_driver_MQ, such as
HP_IEXGBE_MQ or HP_IOCXGBE_MQ.
For example, in the icxgbe driver configuration file /etc/rc.config.d/hpicxgbeconf, set
the HP_ICXGBE_MQ parameter value to the number of queues to be used by the driver, such as
in the following example:
HP_ICXGBE_MQ=3
For drivers that support both multiple receive and transmit queues, the parameter sets the same
number of queues for both receive and transmit.
The maximum limits for transmit and receive queues vary from driver to driver. For all drivers that
support multiple queues, the default setting for the number of queues is 1 (meaning, multiple queues
is not enabled). For details about multiple queue parameter settings, refer to the appropriate
nwmgr_driver(1m) manpage.
Alternatively, you can use the nwmgr command with the --sa option to immediately and
permanently set the number of queues. The nwmgr multiple queues parameter is drv_mq. Use the
command in the following format:
nwmgr --sa -A drv_mq=number-of-queues -c lanppa
3.9 Displaying and setting the Checksum Offload (CKO) parameter
The Checksum Offload (CKO) enables the network adapter to compute the TCP checksum. Saving
the host from having to compute the checksum, this feature reduces CPU overhead. Most HP Ethernet
drivers allow you to set hardware TCP/UDP (IPv4) Checksum Offload (CKO) receive and transmit
to OFF or ON. The ixgbe and icxgbe drivers also allow you to set multifragment checksum
offload.
32 Setting and displaying driver Ethernet parameters