About L1 Data Cache and DTLB Events

This group contains events that monitor the L1 data cache and the DTLB.

Symbol Name	Event Code	Description
CMP_SNOOP	0x78	L1 data cache is snooped by other core.
DTLB_MISSES.ANY	0x08	Memory accesses that missed the DTLB.
DTLB_MISSES.L0_MISS_LD	0x08	L0 DTLB misses due to load operations.
DTLB_MISSES.MISS_LD	0x08	DTLB misses due to load operations.
DTLB_MISSES.MISS_ST	0x08	DTLB misses due to store operations.
L1D_ALL_CACHE_REF	0x43	L1 Data cacheable reads and writes.
L1D_ALL_REF	0x43	All references to the L1 data cache.
L1D_CACHE_LD	0x40	L1 cacheable data reads.
L1D_CACHE_LOCK	0x42	L1 data cacheable locked reads
L1D_CACHE_LOCK_DURATION	0x42	Duration of L1 data cacheable locked operation.
L1D_CACHE_ST	0x41	L1 cacheable data writes.
L1D_M_EVICT	0x47	Modified cache lines evicted from the L1 data cache.
L1D_M_REPL	0x46	Modified cache lines allocated in the L1 data cache.
L1D_PEND_MISS	0x48	Total number of outstanding L1 data cache misses at any cycle.
L1D_PREFETCH.REQUESTS	0x4E	L1 data cache prefetch requests
L1D_REPL	0x45	Cache lines allocated in the L1 data cache.
L1D_SPLIT.LOADS	0x49	Cache line split loads from the L1 data cache.
L1D_SPLIT.STORES	0x49	Cache line split stores to the L1 data cache.
LOAD_BLOCK.L1D	0x03	Loads blocked by the L1 data cache.
LOAD_BLOCK.OVERLAP_STORE	0x03	Loads that partially overlap an earlier store, or 4K aliased with a previous store.
LOAD_BLOCK.STA	0x03	Loads blocked by a preceding store with unknown address.
LOAD_BLOCK.STD	0x03	Loads blocked by a preceding store with unknown data.
LOAD_BLOCK.UNTIL_RETIRE	0x03	Loads blocked until retirement.
MEMORY_DISAMBIGUATION.RESET	0x09	Memory disambiguation reset cycles.
MEMORY_DISAMBIGUATION.SUCCESS	0x09	Number of loads that were successfully disambiguated
MEM_LOAD_RETIRED.DTLB_MISS	0xCB	Retired loads that miss the DTLB (precise event).
MEM_LOAD_RETIRED.L1D_LINE_MISS	0xCB	L1 data cache line missed by retired loads (precise event).
MEM_LOAD_RETIRED.L1D_MISS	0xCB	Retired loads that miss the L1 data cache (precise event).
PAGE_WALKS.COUNT	0x0C	Number of page-walks executed.
PAGE_WALKS.CYCLES	0x0C	Duration of page-walks in core cycles
RESOURCE_STALLS.LD_ST	0xDC	Cycles during which the pipeline has exceeded load or store limit or waiting to commit all stores.
SB_DRAIN_CYCLES	0x04	Cycles while stores are blocked due to store buffer drain.
SEGMENT_REG_LOADS	0x06	Number of segment register loads.
STORE_BLOCK.ORDER	0x04	Cycles while store is waiting for a preceding store to be globally observed.
STORE_BLOCK.SNOOP	0x04	A store is blocked due to a conflict with an external or internal snoop.

About L1 Data Cache and DTLB Events

Symbol Name

Event Code

Description