18-72 Vol. 3B
PERFORMANCE MONITORING
Additionally, there is also a fixed counter, counting uncore clockticks, for the uncore domain. Table 18-39 summa-
rizes the number MSRs for uncore PMU for each box.
The uncore performance events for the C-Box and ARB units are listed in Table 19-9.
18.11.7 Intel
®
Xeon
®
Processor E5 v3 Family Uncore Performance Monitoring Facility
Details of the uncore performance monitoring facility of Intel Xeon Processor E5 v3 families are available in “Intel®
Xeon® Processor E5 v3 Uncore Performance Monitoring Programming Reference Manual”. The MSR-based uncore
PMU interfaces are listed in Table 35-31.
18.12 INTEL
®
CORE
™
M PROCESSOR PERFORMANCE MONITORING FACILITY
The Intel
®
Core™ M processor and the 5th Generation Intel Core processor families are based on the Broadwell
microarchitecture. The core PMU supports architectural performance monitoring capability with version ID 3 (see
Section 18.2.3) and a host of non-architectural monitoring capabilities.
Architectural performance monitoring version 3 capabilities are described in Section 18.2.3.
The core PMU has the same capability as those described in Section 18.11. IA32_PERF_GLOBAL_STATUS provide a
bit indicator (bit 55) for PMI handler to distinguish PMI due to output buffer overflow condition due to accumulating
packet data from Intel Processor Trace.
Table 18-52. Uncore PMU MSR Summary
Box
# of Boxes
Counters per
Box
Counter
Width
General
Purpose
Global
Enable Comment
C-Box
SKU specific
2
44
Yes
Per-box
Up to 4, seeTable 35-19
MSR_UNC_CBO_CONFIG
ARB
1
2
44
Yes
Uncore
Fixed Counter
N.A.
N.A.
48
No
Uncore
Figure 18-41. IA32_PERF_GLOBAL_STATUS MSR in Broadwell Microarchitecture
62
FIXED_CTR2 Overflow (RO)
FIXED_CTR1 Overflow (RO)
FIXED_CTR0 Overflow (RO)
PMC7_OVF (RO, If PMC7 present)
2 1 0
PMC6_OVF (RO, If PMC6 present)
31
32
33
34
35
Reserved
63
CondChgd
Ovf_Buffer
8 7 6 5 4 3
PMC5_OVF (RO, If PMC5 present)
PMC4_OVF (RO, If PMC4 present)
PMC3_OVF (RO)
PMC2_OVF (RO)
PMC1_OVF (RO)
PMC0_OVF (RO)
Valid if CPUID.0AH:EAX[15:8] = 8; else reserved
Ovf_UncorePMU
61
Trace_ToPA_PMI
55