NoteHKLM\SYSTEM\CurrentControlSet\Services\Psched\Parameters\Adapters\<Adapter-GUID>
| Data type | Range | Default value |
|---|---|---|
| REG_DWORD | 0x0 - 0xFFFFFFFF | 0xFFFF |
Determines the maximum number of outstanding packets permitted on the interface. When the number of outstanding packets reaches this limit, the Packet Scheduler postpones all submissions to this network adapter until the number falls below this limit.
Outstanding packets are packets that the Packet Scheduler has submitted to the network adapter for transmission, but which the network adapter has not yet sent.
If the value of this entry is too low, packets can accumulate in the Packet Scheduler when network traffic is heavy. The packet scheduler services packet flows in order of priority or weight.
If the value of this entry is too high, packets can accumulate in the network adapter, rather than the Packet Scheduler. In this case, the queue servicing routines implemented by the Packet Scheduler sequencer have no effect on the order in which packets from different flows are transmitted. However, the system benefits from the optimized performance of pipelining on the adapter.
Note
This entry takes precedence over a Group Policy that applies to packets carried by all network adapters on this computer. For more information, see MaxOutstandingSends (Policies subkey).
Windows 2000 does not add this entry to the registry. You can add it by editing the registry or by using a program that edits the registry.