Intel Xeon E5-2600 Series - 1 Introduction; Uncore PMON Overview; Uncore Sub-System Block Diagram of Intel Xeon Processor E5-2600 Family

Reference Number: 327043-001 9
Introduction
1 Introduction
1.1 Introduction
The uncore subsystem of the Intel® Xeon® processor E5-2600 product family is shown in Figure 1-1.
The uncore subsystem also applies to the Intel® Xeon® processor E5-1600 product family in a
single-socket platform
1
. The uncore sub-system consists of a variety of components, ranging from the
CBox caching agent to the power controller unit (PCU), integrated memory controller (iMC) and home
agent (HA), to name a few. Most of these components provide similar performance monitoring
capabilities.
1.2 Uncore PMON Overview
The uncore performance monitoring facilities are organized into per-component performance
monitoring (or ‘PMON’) units. A PMON unit within an uncore component may contain one of more
sets of counter registers. With the exception of the UBox, each PMON unit provides a unit-level
control register to synchronize actions across the counters within the box (e.g., to start/stop
counting).
1. The uncore sub-system in Intel® Core
TM
i7-3930K and i7-3820 processors are derived from
above, hence most of the descriptions of this document also apply.
Figure 1-1. Uncore Sub-system Block Diagram of Intel Xeon Processor E5-2600 Family