Providing a fine-grained arbitration system

An apparatus comprising:

• a first counter circuit including a plurality of first counters each associated with a requester and to store a count of command units allocated to the corresponding requester;
• a second counter circuit including a plurality of second counters each associated with a requester and to store a count of data units allocated to the corresponding requester;
• and
• an arbiter coupled to the first and second counter circuits to select one of the plurality of requesters to service and to grant a transaction of the requester access to an interconnect if the first and second counters associated with the selected requester are in compliance with a corresponding threshold value, and otherwise to deny the transaction of the requester.

A system comprising:

• a first agent to perform operations on data;
• a second agent to perform operations on data;
• a shared interconnect coupled to the first and second agents;
• a command unit counter to store a count of command units allocated to the first and second agents;
• a data unit counter to store a count of data units allocated to the first and second agents;
• and
• an arbiter coupled to the command unit counter and the data unit counter, and to select one of the first and second agents to enable access to the shared interconnect if the command unit counter and the data unit counter associated with the selected agent are above a corresponding threshold value, and otherwise to prevent the access to the shared interconnect by the selected agent.