Intel Core 2 Performance Counter Event List

Intel’s Core 2 processors have 5 performance counters per core. Two of these are fully programmable, and can count 116 (#1) or 115 (#2) different types of events. The other three counters are fixed, and can only count one type of event (for counter 3: INSTR_RETIRED.ANY, 4: CPU_CLK_UNHALTED.CORE, and 5: CPU_CLK_UNHALTED.REF).

In addition, the available events can be modified by enabling any of the eight Event-Mask bits associated with each programmable counter. The event-mask bits are critical to determining exactly which events will be counted. Most of the events can be selected without enabling any event-mask bits at all. The mask bits just modify the type of event slightly or the way the counter gets incremented when the event occurs. In particular, the mask settings often act as an event filter, limiting or expanding the selection of related events that can be counted simultaneously. In contrast, for some types of events youmust set event-mask bits properly, in order to count anything at all. These bits are labeled ‘Required’ in the event-mask bit list.

The table below lists each Event Name, the counter (PMC) number(s) for counters which can count the event, the event’s number, and the valid mask bits that can be enabled, for every useful event type. This last column lists mask bits using numbers between 0 and 7. Missing numbers indicate bits that are reserved and should not be enabled. If no mask bits are valid for that type of event, then “none” is listed.

In Shark, more complete documentation as to what the event names mean and how each mask bit modifies the count are provided as “tool-tips” when you hover the mouse over an event name in the popup menu, or over a specific bit name in the event-mask list. The event-mask bit controls are only accessible from the Advanced View controls shown in the “Timed Counters: The Performance Counter Spreadsheet.”

For more information on how to configure these counters, see “Intel CPU Performance Counter Configuration.”

Performance Counter Event Name	Event Number	PMC Number	Valid Event-Mask Bits
BACLEARS	230	1	none
		2	0
BR_BAC_MISSP_EXEC	138	1	none
		2	0
BR_BOGUS	228	1	none
		2	0
BR_CALL_EXEC	146	1	none
		2	0
BR_CALL_MISSP_EXEC	147	1	none
		2	0
BR_CND_EXEC	139	1	none
		2	0
BR_CND_MISSP_EXEC	140	1	none
		2	0
BR_IND_CALL_EXEC	148	1	none
		2	0
BR_IND_EXEC	141	1	none
		2	0
BR_IND_MISSP_EXEC	142	1	none
		2	0
BR_INST_DECODED	224	1	none
		2	0
BR_INST_EXEC	136	1	none
		2	0
BR_INST_RETIRED	196	1	0 1 2 3 6 7
		2	0 2 3 4 5 6 7
BR_INST_RETIRED.MISPRED	197	1	none
		2	0 2 3 4 5
BR_MISSP_EXEC	137	1	none
		2	0
BR_RET_BAC_MISSP_EXEC	145	1	none
		2	0
BR_RET_EXEC	143	1	none
		2	0
BR_RET_MISSP_EXEC	144	1	none
		2	0
BR_TKN_BUBBLE_1	151	1	none
		2	0
BR_TKN_BUBBLE_2	152	1	none
		2	0
BUS_BNR_DRV	97	1	5
		2	0
BUS_DATA_RCV	100	1	6 7
		2	0 7
BUS_DRDY_CLOCKS	98	1	5
		2	0
BUS_HIT_DRV	122	1	5
		2	0 2 3 5 7
BUS_HITM_DRV	123	1	5
		2	0 2 3
BUS_IO_WAIT	127	1	6 7
		2	0
BUS_LOCK_CLOCKS (Core and Bus Agents masks apply)	99	1	5 6 7
		2	0 6 7
BUS_REQ_OUTSTANDING	96	1	4 5 6 7
		2	0
BUS_TRAN_RFO	102	1	5 6 7
		2	0 7
BUS_TRANS_ANY	112	1	5 6 7
		2	0 7
BUS_TRANS_BRD	101	1	5 6 7
		2	0 7
BUS_TRANS_BURST	110	1	5 6 7
		2	0 7
BUS_TRANS_DEF	109	1	5 6 7
		2	0 7
BUS_TRANS_IFETCH	104	1	5 6 7
		2	0 7
BUS_TRANS_INVAL	105	1	5 6 7
		2	0 7
BUS_TRANS_IO	108	1	5 6 7
		2	0 7
BUS_TRANS_MEM	111	1	5 6 7
		2	0 7
BUS_TRANS_P	107	1	5 6 7
		2	0 7
BUS_TRANS_PWR	106	1	5 6 7
		2	0 7
BUS_TRANS_WB	103	1	5 6 7
		2	0
BUSQ_EMPTY	125	1	6 7
		2	0 7
CMP_SNOOP	120	1	0 1 6 7
		2	0
CPU_CLK_UNHALTED	60	1	0 1
		2	0
CPU_CLK_UNHALTED.CORE	0	4	none
CPU_CLK_UNHALTED.REF	0	5	none
CYCLES_DIV_BUSY	20	1	none
CYCLES_INT	198	1	0 1
		2	0 2 4
CYCLES_L1I_MEM_STALLED	134	1	none
		2	0 3
DELAYED_BYPASS	25	2	0
DIVIDES	19	2	0
DTLB_MISSES	8	1	0 1 2 3
		2	0
EIST_TRANS	58	1	none
		2	0
ESP Register	171	1	0 1
		2	0
EXT_SNOOP	119	1	0 1 3 5
		2	0
FP_ASSIST	17	2	0
FP_COMP_OPS_EXE	16	1	none
FP_MMX_TRANS	204	1	0 1
		2	0
HW_INT_RCV	200	1	none
		2	0
IDLE_DURING_DIV	24	1	none
ILD_STALL	135	1	none
		2	0
INST_QUEUE.FULL	131	1	1
		2	0
INST_RETIRED	192	1	0 1 2
		2	0
INSTR_RETIRED.ANY	0	3	none
ITLB	130	1	1 4 6
		2	0
ITLB_MISS_RETIRED	201	1	none
		2	0 2 3
L1D_ALL_REF	67	1	0 1
		2	0 2 3 4 5
L1D_CACHE_LD	64	1	0 1 2 3
		2	0
L1D_CACHE_LOCK	66	1	0 1 2 3 4
		2	0
L1D_CACHE_ST	65	1	0 1 2 3
		2	0
L1D_M_EVICT	71	1	none
		2	0
L1D_M_REPL	70	1	none
		2	0 2 3
L1D_PEND_MISS	72	1	none
		2	0 2 3 4 5
L1D_PREFETCH.REQUESTS	78	1	4
		2	0 2 3
L1D_REPL	69	1	0 1 2 3
		2	0 2 3 4 5 6
L1D_SPLIT	73	1	0 1
		2	0
L1I_MISSES	129	1	none
		2	0 6 7
L1I_READS	128	1	none
		2	0
L2_ADS	33	1	6 7
		2	0
L2_DBUS_BUSY_RD	35	1	6 7
		2	0
L2_IFETCH	40	1	0 1 2 3 6 7
		2	0
L2_LD	41	1	0 1 2 3 4 5 6 7
		2	0 6 7
L2_LINES_IN	36	1	4 5 6 7
		2	0
L2_LINES_OUT	38	1	4 5 6 7
		2	0
L2_LOCK	43	1	0 1 2 3 4 5 6 7
		2	0 2 3 4 5
L2_M_LINES_IN	37	1	6 7
		2	0
L2_M_LINES_OUT	39	1	4 5 6 7
		2	0 6 7
L2_NO_REQ	50	1	6 7
		2	0
L2_REJECT_BUSQ	48	1	0 1 2 3 4 5 6 7
		2	0
L2_RQSTS	46	1	0 1 2 3 4 5 6 7
		2	0 2 3 4 5 6 7
L2_ST	42	1	0 1 2 3 6 7
		2	0 6 7
LOAD_BLOCK	3	1	1 2 3 4 5
		2	0
LOAD_HIT_PRE	76	1	none
		2	0 2 3
MACHINE_NUKES	195	1	0 2
		2	0 2 3 4
MACRO_INSTS.CISC_DECODED	170	1	3
		2	0
MEM_LOAD_RETIRED	203	1	none
MEMORY_DISAMBIGUATION	9	1	0 1
		2	0
MISALIGN_MEM_REF	5	1	none
		2	0
MULTIPLIES	18	2	0
PAGE_WALKS	12	1	0 1
		2	0 2 3
PREF_RQSTS_DN	248	1	none
		2	0
PREF_RQSTS_UP	240	1	none
		2	0
RAT_STALLS	210	1	0 1 2 3
		2	0
RESOURCE_STALLS	220	1	0 1 2 3 4
		2	0
RS_UOPS_DISPATCHED	160	1	none
		2	0
SEG_REG_RENAMES	213	1	0 1 2 3
		2	0 2 3 4 5
SEG_RENAME_STALLS	212	1	0 1 2 3
		2	0
SEGMENT_REG_LOADS	6	1	none
		2	0 3 4 5 6 7
SIMD_ASSIST	205	1	none
		2	0 2 3 4 5
SIMD_COMP_INST_RETIRED	202	1	0 1 2 3
		2	0 2 3 4 5 6
SIMD_INST_RETIRED	199	1	0 1 2 3 4
		2	0 2 3 4 5
SIMD_INSTR_RETIRED	206	1	none
		2	0 2 3 4 5 6
SIMD_SAT_INSTR_RETIRED	207	1	none
		2	0 2 3
SIMD_SAT_UOP_EXEC	177	1	none
		2	0
SIMD_UOP_TYPE_EXEC	179	1	0 1 2 3 4 5
		2	0
SIMD_UOPS_EXEC	176	1	none
		2	0
SNOOP_STALL_DRV	126	1	4 5 6 7
		2	0 7
SSE_PRE_EXEC	7	1	0 1
		2	0 2 3 5
SSE_PRE_MISS	75	1	0 1
		2	0
STORES BLOCKED	4	1	0 1 3
		2	0
THERMAL_TRIP	59	1	6 7
		2	0
UOPS_RETIRED	194	1	0 1 2 3
		2	0
X87_OPS_RETIRED	193	1	0 1 2 3 4 5 6
		2	0

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