Abstract: This document describes systems and techniques for modulating credit allocations in memory subsystems. The described systems and techniques can provide a feedback mechanism to a credit controller to improve the bandwidth at a memory interface. The memory controller monitors statistics associated with transaction requests served to one or more random access memories (RAMs) of the memory subsystem. The memory controller can then provide suggestions to the credit controller or to the one or more clients to modulate the number of credits allocated to one or more clients. In this way, the described systems and techniques can improve the efficiency of the memory controller in managing the transaction requests and the bandwidth at the memory interface.

Abstract: Techniques and apparatuses are described that enable memory request timeouts using a common counter. A memory request is received, and a common count timeout is generated for the memory request based on a common count at a time of receipt and a latency requirement of the memory request. Common count timeouts of one or more related memory requests within a memory request buffer (if they exist) are adjusted as needed, and the memory request is placed in the memory request buffer. The common count is incremented, and the memory request is indicated as timed out in response to an incrementation of the common count matching the common count timeout for the memory request.