User Manual

Rev 4.70
Mellanox Technologies
177
*ReceiveBuffers 1024 The number of packets each ring receives. This parameter affects
the memory consumption and the performance. Increasing this
value can enhance receive performance, but also consumes more
system memory.
In case of lack of received buffers (dropped packets or out of order
received packets), you can increase the number of received buffers.
The valid values are 256 up to 4096.
Note: On 32-bit systems, the non-pageable memory is limited. As a
result, when the MTU is higher than 5000 and the ring size is 2048
or more, the initialization can fail due to a lack of memory. If the
MTU is more than 5000, the driver limits the ring size on 32-bit
system to be 1024.
*TransmitBuffers 2048 The number of packets each ring sends. Increasing this value can
enhance transmission performance, but also consumes system
memory.
The valid values are 256 up to 4096.
*SpeedDuplex 7 (default) The Speed and Duplex settings that a device supports. This registry
key should not be changed and it can be used to query the device
capability. Mellanox ConnectX device is set to 7 meaning10Gbps
and Full Duplex.
Note: Default value should not be modified.
MaxNumOfMCList 128 The number of multicast addresses that are filtered by the NIC. If
the OS uses more multicast addresses than were defined, it sets the
port to multicast promiscuous and the multicast addresses are fil-
tered by OS at protocol level.
The valid values are 64 up to 1024.
Note: This registry value is not exposed via the UI.
*QOS 1 Enables the NDIS Quality of Service (QoS)
The valid values are:
• 1: enable
• 0: disable
Note: This keyword is only valid for ConnectX-3 when using Win-
dows Server 2012 and above.
Value Name Default Value Description