Network Driver Parameters

`igb` Parameters

`mr_enable`

Description: This parameter enables or disables multiple receive and transmit queues that are used by the igb network driver. This parameter can be set by editing the /etc/driver/drv/igb.conf file before the igb driver attach occurs.
Data Type: Boolean
Default: 1 (disable multiple queues)
Range: 0 (enable multiple queues) or 1 (disable multiple queues)
Dynamic?: No
Validation: None
When to Change: To enable or disable multiple receive and transmit queues that are used by the igb network driver.
Commitment Level: Unstable

`intr_force`

Description

This parameter is used to force an interrupt type, such as MSI, MSI-X, or legacy, that is used by the igb network driver. This parameter can be set by editing the /etc/driver/drv/igb.conf file before the igb driver attach occurs.

Data Type

Unsigned integer

Default

0 (do not force an interrupt type)

Range

0 (do not force an interrupt type)

1 (force MSI-X interrupt type)

2 (force MSI interrupt type)

3 (force legacy interrupt type)

Dynamic?

Validation

None

When to Change

To force an interrupt type that is used by the igb network driver.

Commitment Level

Unstable

`ixgbe` Parameters

`tx_queue_number`

Description: This parameter controls the number of transmit queues that are used by the ixgbe network driver. You can increase the number of transmit queues by increasing the value of this parameter. This parameter can be set by editing the /etc/driver/drv/igb.conf file before the ixgbe driver attach occurs.
Data Type: Unsigned integer
Default: 8
Range: 1 to 32
Dynamic?: No
Validation: None
When to Change: To change the number of transmit queues that are used by the ixgbe network driver.
Commitment Level: Unstable

`rx_queue_number`

Description: This parameter controls the number of receive queues that are used by the ixgbe network driver. You can increase the number of receive queues by increasing the value of this parameter. This parameter can be set by editing the /etc/driver/drv/igb.conf file before the ixgbe driver attach occurs.
Data Type: Unsigned integer
Default: 8
Range: 1 to 64
Dynamic?: No
Validation: None
When to Change: To change the number of receive queues that are used by the ixgbe network driver.
Commitment Level: Unstable

`intr_throttling`

Description: This parameter controls the interrupt throttling rate of the ixgbe network driver. You can increase the rate of interrupt by decreasing the value of this parameter. This parameter can be set by editing the /etc/driver/drv/ixgbe.conf file before the ixgbe driver attach occurs.
Data Type: Unsigned integer
Default: 200
Range: 0 to 65535
Dynamic?: No
Validation: None
When to Change: To change the interrupt throttling rate that is used by the ixgbe network driver.
Commitment Level: Unstable

`rx_limit_per_intr`

Description: This parameter controls the maximum number of receive queue buffer descriptors per interrupt that are used by the ixgbe network driver. You can increase the number of receive queue buffer descriptors by increasing the value of this parameter. This parameter can be set by editing the /etc/driver/drv/ixgbe.conf file before the ixgbe driver attach occurs.
Data Type: Unsigned integer
Default: 256
Range: 16 to 4096
Dynamic?: No
Validation: None
When to Change: To change the number of receive queue buffer descriptors that are handled per interrupt by the ixgbe network driver.
Commitment Level: Unstable

`tx_ring_size`

Description: This parameter controls the transmit queue size that is used by the ixgbe network driver. You can increase the transmit queue size by increasing the value of this parameter. This parameter can be set by editing the /etc/driver/drv/ixgbe.conf file before the ixgbe driver attach occurs.
Data Type: Unsigned integer
Default: 1024
Range: 64 to 4096
Dynamic?: No
Validation: None
When to Change: To change the transmit queue size that is used by the ixgbe network driver.
Commitment Level: Unstable

`rx_ring_size`

Description: This parameter controls the receive queue size that is used by the ixgbe network driver. You can increase the receive queue size by increasing the value of this parameter. This parameter can be set by editing the /etc/driver/drv/ixgbe.conf file before the ixgbe driver attach occurs.
Data Type: Unsigned integer
Default: 1024
Range: 64 to 4096
Dynamic?: No
Validation: None
When to Change: To change the receive queue size that is used by the ixgbe network driver.
Commitment Level: Unstable

`tx_copy_threshold`

Description: This parameter controls the transmit buffer copy threshold that is used by the ixgbe network driver. You can increase the transmit buffer copy threshold by increasing the value of this parameter. This parameter can be set by editing the /etc/driver/drv/ixgbe.conf file before the ixgbe driver attach occurs.
Data Type: Unsigned integer
Default: 512
Range: 0 to 9126
Dynamic?: No
Validation: None
When to Change: To change the transmit buffer copy threshold that is used by the ixgbe network driver.
Commitment Level: Unstable

`rx_copy_threshold`

Description: This parameter controls the receive buffer copy threshold that is used by the ixgbe network driver. You can increase the receive buffer copy threshold by increasing the value of this parameter. This parameter can be set by editing the /etc/driver/drv/ixgbe.conf file before the ixgbe driver attach occurs.
Data Type: Unsigned integer
Default: 128
Range: 0 to 9126
Dynamic?: No
Validation: None
When to Change: To change the receive buffer copy threshold that is used by the ixgbe network driver.
Commitment Level: Unstable

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