Latency Tolerance Escalation Detection

A method comprising:

• distributing, by a performance management circuit, respective indications of available bandwidth to ones of a plurality of agent circuits included in a computer system implemented on one or more co-packaged integrated circuit dies;
• receiving, by a latency escalation detector circuit coupled to a given agent circuit of the plurality of agent circuits, a respective indication of available bandwidth for the given agent circuit;
• based on determining that the respective indication of available bandwidth is insufficient for the given agent circuit, asserting, by the latency escalation detector circuit, a trigger signal;
• and
• based on the asserting of the trigger signal, capturing, by a snapshot circuit, current values from a set of registers in the given agent circuit without affecting a state of the set of registers.

An apparatus, comprising:

• an agent circuit configured to:
• receive an indication of a current available bandwidth for a communication fabric, coupled to the agent circuit, that is configured to support transactions between the agent circuit and other circuit blocks;
• and
• issue real-time (RT) transactions via the communication fabric in accordance with the indication, wherein RT transactions have a higher priority than other types of transactions;
• a latency escalation detector circuit that is coupled to the agent circuit and configured to:
• receive the indication of the current available bandwidth;
• determine that the indicated current available bandwidth is insufficient for tasks assigned to the agent circuit;
• and
• based on the determination that the indicated current available bandwidth is insufficient, assert a trigger signal;
• and
• a snapshot circuit that is coupled to the agent circuit and configured to:
• based on the assertion of the trigger signal, capture current values from a particular set of registers in the agent circuit without affecting a state of the particular set of registers.