Uncore Pmu Summary Tables; Msr Space Uncore Performance Monitoring Registers - Intel Xeon E5-2600 Series Monitoring Manual

Additional control bits include:
Applying a Threshold to Incoming Events: .thresh - since most counters can increment by a
value greater than 1, a threshold can be applied to generate an event based on the outcome of the
comparison. If the .thresh is set to a non-zero value, that value is compared against the incoming
count for that event in each cycle. If the incoming count is >= the threshold value, then the event
count captured in the data register will be incremented by 1.
Using the threshold field to generate additional events can be particularly useful when applied to a
queue occupancy count. For example, if a queue is known to contain eight entries, it may be useful to
know how often it contains 6 or more entires (i.e. Almost Full) or when it contains 1 or more entries
(i.e. Not Empty).
Note: The .invert and .edge_det bits follow the threshold comparison in sequence. If a user
wishes to apply these bits to events that only increment by 1 per cycle, .thresh must be
set to 0x1.
Inverting the Threshold Comparison: .invert - Changes the .thresh test condition to '<'.
Counting State Transitions Instead of per-Cycle Events: .edge_det - Rather than accumulating
the raw count each cycle (for events that can increment by 1 per cycle), the register can capture
transitions from no event to an event incoming (i.e. the 'Rising Edge').
1.5

Uncore PMU Summary Tables

Following is a list of the registers provided in the Uncore for Performance Monitoring. It should be
noted that the PMON interfaces are split between MSR space (U, CBo and PCU) and PCICFG space.
Table 1-2. MSR Space Uncore Performance Monitoring Registers (Sheet 1 of 2)
C-Box Counters
C-Box 7
C-Box 6
C-Box 5
C-Box 4
C-Box 3
12
Box MSR Addresses
0xDF9-0xDF6
0xDF3-0xDF0
0xDD9-0xDD6
0xDD3-0xDD0
0xDB9-0xDB6
0xDB3-0xDB0
0xD99-0xD96
0xD93-0xD90
0xD79-0xD76
0xD73-0xD70
Counter Registers
0xDF4 Counter Filters
Counter Config Registers
0xDE4 Box Control
Counter Registers
0xDD4 Counter Filters
Counter Config Registers
0xDC4 Box Control
Counter Registers
0xDB4 Counter Filters
Counter Config Registers
0xDA4 Box Control
Counter Registers
0xD94 Counter Filters
Counter Config Registers
0xD84 Box Control
Counter Registers
0xD74 Counter Filters
Counter Config Registers
Introduction
Description
Reference Number: 327043-001