Weighted instruction count scheduling

摘要

A method and system are provided for performing efficient and effective scheduling in a multi-threaded system. Dynamic control of scheduling is provided, in which priority weights can be assigned for some or all of the threads in the multi-threaded system. The priority weights are employed to control prioritization of threads and thread instructions by a scheduler. An instruction count for each thread is used in combination with the priority weights to determine the prioritization order in which instructions are fetched and assigned to execution units for processing.

主权项

1. A processor, comprising:
an instruction fetch unit to fetch instructions generated by a plurality of threads; and a thread scheduler to generate a schedule for fetches by the instruction fetch unit based at least in part on priority values assigned to the plurality of threads, wherein a priority value assigned to a thread from the plurality of threads is computed by adjusting an instruction count for the thread using a priority weighting for the thread.