Abstract: Examples of the present disclosure describe devices, systems, and methods for runtime profiling workload on a system on a chip (SOC). In examples. A SOC records runtime metrics while running a workload using counters to calculate the usage of logical partitions of the SOC. The SOC uses the runtime metrics to determine the logical partitions' performance characteristics and the processors' optimal clock frequency in each logical partition based on the performance characteristics. The SOC sets the clock speeds of a processor in a logical partition while the workload is still running on the SOC to its optimal clock frequency.