A plurality of work requests may be received from a plurality of clients. A plurality of credits may be distributed among the plurality of clients. The plurality of credits may be distributed in response to a refreshed credit cycle. At least one of the work requests to be processed may be selected based on an amount of the credits available for the clients. An amount of credits to distribute to the clients may be determined in response to the refreshed credit cycle based on an amount of the credits used to process the at least one work request during a last credit cycle compared to a system credit capacity of the system.