Abstract: In one embodiment, a method for controlling reads in a computer input/output (I/O) interconnect is provided. A read request is received over the computer I/O interconnect from a first device, the request requesting data of a first size. Then it is determined whether fulfilling the read request would cause the total size of a completion queue to exceed a first predefined threshold.

Abstract: In a first embodiment of the present invention, a method for handling a Transaction Layer Packets (TLPs) from devices in a switch is provided, the method comprising: subtracting a first number of credits from a credit pool associated with a first port on which a first device is connected; determining if the amount of credits in the credit pool associated with the first port is less than a first predetermined threshold; and if the amount of credits in the credit pool associated with the first port is less than the first predetermined threshold, assigning a second number of credits from a shared credit pool to the credit pool associated with the first port.