Intel® Xeon® Processor E5-2600 Product Family Uncore Performance Monitoring
86 Reference Number: 327043-001
PROCHOT_EXTERNAL_CYCLES
• Title: External Prochot
• Category: PROCHOT Events
• Event Code: 0x0A
• Max. Inc/Cyc: 1, Register Restrictions: 0-3
• Definition: Counts the number of cycles that we are in external PROCHOT mode. This mode is
triggered when a sensor off the die determines that something off-die (like DRAM) is too hot and
must throttle to avoid damaging the chip.
PROCHOT_INTERNAL_CYCLES
• Title: Internal Prochot
• Category: PROCHOT Events
• Event Code: 0x09
• Max. Inc/Cyc: 1, Register Restrictions: 0-3
• Definition: Counts the number of cycles that we are in Interal PROCHOT mode. This mode is trig-
gered when a sensor on the die determines that we are too hot and must throttle to avoid damaging
the chip.
TOTAL_TRANSITION_CYCLES
• Title: Total Core C State Transition Cycles
• Category: CORE_C_STATE_TRANSITION Events
• Event Code: 0x0B
• Extra Select Bit: Y
• Max. Inc/Cyc: 1, Register Restrictions: 0-3
• Definition: Number of cycles spent performing core C state transitions across all cores.
VOLT_TRANS_CYCLES_CHANGE
• Title: Cycles Changing Voltage
• Category: VOLT_TRANS Events
• Event Code: 0x03
• Max. Inc/Cyc: 1, Register Restrictions: 0-3
• Definition: Counts the number of cycles when the system is changing voltage. There is no filtering
supported with this event. One can use it as a simple event, or use it conjunction with the occu-
pancy events to monitor the number of cores or threads that were impacted by the transition. This
event is calculated by or'ing together the increasing and decreasing events.
VOLT_TRANS_CYCLES_DECREASE
• Title: Cycles Decreasing Voltage
• Category: VOLT_TRANS Events
• Event Code: 0x02
• Max. Inc/Cyc: 1, Register Restrictions: 0-3
• Definition: Counts the number of cycles when the system is decreasing voltage. There is no filter-
ing supported with this event. One can use it as a simple event, or use it conjunction with the occu-
pancy events to monitor the number of cores or threads that were impacted by the transition.
VOLT_TRANS_CYCLES_INCREASE
• Title: Cycles Increasing Voltage
• Category: VOLT_TRANS Events
• Event Code: 0x01
• Max. Inc/Cyc: 1, Register Restrictions: 0-3
To Next Page
Loading...
