![]() Note: This key affects NDK functionality and not Userspace ND (Network Direct).įor further details, see: network/enabling-and-disabling-ndk-functionality It is important to set the switch to enable ECN and/or PFC otherwise the system will experience performance degradation. Note: This key is enabled by default, thus NDK will be used. If it is set to 0 ("Disabled"), NDK functionality cannot be enabled. If this keyword value is set to 1 ("Enabled"), NDK functionality can be enabled. ![]() The *NetworkDirect keyword determines whether the miniport driver's NDK functionality can be enabled. Increasing this value can enhance transmission performance, but also consumes 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. ![]() Increasing this value can enhance receive performance, but also consumes more system memory. This parameter affects the memory consumption and the performance. The number of packets each ring receives. (i.e when setting *JumboPacket to 1514, the actual payload size is 1500 bytes). NVIDIA® adapters do include Ethernet header information in the frame size. information in the frame size, while others do not. Be aware that different network devices calculate the frame size differently. Note: All the devices across the network (switches and routers) should support the same frame size. The standard Ethernet frame size is 1514 bytes, but NVIDIA® drivers support wide range of packet sizes. However, it can also reduce the CPU utilization and improve the wire efficiency. The MTU may have a significant impact on the network's performance as a large packet can cause high latency. This is also known as the maximum transmission unit (MTU). The maximum size of a frame (or a packet) that can be sent over the wire.
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