Oracle Solaris Tunable Parameters Reference Manual

ip_multidata_outbound (Solaris 10 Release)

This parameter was enhanced in the Solaris 10 release to deliver IP fragments in batches to the network driver. For more information, see ip_multidata_outbound.


Enables the network stack to send more than one packet at one time to the network device driver during transmission.

Enabling this parameter reduces the per-packet processing costs by improving host CPU utilization, network throughput, or both.

The multidata transmit (MDT) feature is only effective for device drivers that support this feature.

See also tcp_mdt_max_pbufs.


1 (Enabled)


0 (disabled) or 1 (enabled)



When to Change

If you do not want this parameter enabled for debugging purposes or for any other reasons, disable it.

Commitment Level


Change History

For information, see ip_multidata_outbound (Solaris 9 Release).