Timestamp correlated performance monitoring across a graphics processing unit (GPU) system

A method comprising:

• adjusting hardware and/or software operating characteristics in a system based on performance data of two or more circuitries with timestamp values generated by a power management unit that is powered-on regardless of whether the two or more circuitries are powered off.

At least one non-transitory computer-readable medium comprising instructions stored thereon, that if executed by one or more processors, cause the one or more processors in two or more processor circuitry components to:

• generate data of events performed by sub-components of the two or more processor circuitry components associated with timestamp values generated by a power management circuitry comprising timestamp generator circuitry, wherein;
• the timestamp generator circuitry is to generate timestamp values based on a single clock source and provide generated timestamp values to the two or more processor circuitry components for multiple power states of the two or more processor circuitry components, and
• the two or more processor circuitry components share timestamp values.