Data type


Default value


Windows NT Workstation: 1–64 Windows NT Server: 1–65,535 Windows 2000 Professional: 1–64 Windows 2000 Server: 1–65,535

(Depends on configuration.)


Specifies the maximum number of receive buffers (work items) that the Server service can allocate at one time. If this limit is reached, the transport must initiate flow control, which can significantly impair performance.

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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 it.

You should avoid changing the default value of this entry. The default value is scaled from the current memory resources on the computer. If you change the value, it will not automatically scale as memory is either added or removed.

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