IO completion architecture for user-mode networking

A computer-readable medium having computer-executable instructions for facilitating adaptively processing completions of data transfer operations in a server comprising a network interface communicably coupled to perform the data transfer operations, a completion queue storing completion information for the data transfer operations, a set of executing threads capable of processing the completion information, the set of executing threads comprising a dedicated thread having a priority level responsive to a status of the completion queue, and wherein an application thread is coupled to an application running on the server to process application system calls, the computer-readable medium having computer-executable instructions facilitating performing the steps of:

• first processing, by the set of executing threads, the completion information in the completion queue according to a first priority level of the dedicated thread;
• determining a change in status of the completion queue and in response assigning a second priority level to the dedicated thread;
• and
• second processing, by the set of executing threads, the completion queue in the completion queue according to the second priority level of the dedicated thread.

An IO completion framework in a computer system for adaptively processing completion entries in a completion queue, the framework comprising:

• a network interface for receiving and enqueueing the completion entries in the completion queue;
• and
• a set of executing threads comprising:
• at least a dedicated thread, the dedicated thread having a priority attribute;
• and
• a monitor for setting the priority attribute in accordance with a status of the completion queue.