3rd Gen Intel® Xeon® Processor Scalable Family, Codename Ice Lake, Uncore Performance Monitoring Reference Manual
‘Uncore’ roughly equates to logic outside the CPU cores but residing on the same die. Traffic (for example, Data Reads) generated by threads executing on CPU cores or IO devices may be operated on by logic in the Uncore. Logic responsible for managing coherency, managing access to the DIMMs, managing power distribution and sleep states, and so forth.
The uncore sub-system consists of a variety of components, many assigned to the aforementioned responsibilities, ranging from the CHA cache/home agent to the power controller unit (PCU) and integrated memory controller (IMC), to name a few. Most of these components provide similar performance monitoring capabilities.
Product and Performance Information
Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.