SHORT L3 cache miss rate/ratio

EVENTSET
FIXC0 INSTR_RETIRED_ANY
FIXC1 CPU_CLK_UNHALTED_CORE
FIXC2 CPU_CLK_UNHALTED_REF
PMC0  MEM_LOAD_UOPS_RETIRED_L3_ALL
PMC1  MEM_LOAD_UOPS_RETIRED_L3_MISS
PMC2  UOPS_RETIRED_ALL

METRICS
Runtime (RDTSC) [s] time
Runtime unhalted [s] FIXC1*inverseClock
Clock [MHz]  1.E-06*(FIXC1/FIXC2)/inverseClock
CPI  FIXC1/FIXC0
L3 request rate PMC0/PMC2
L3 miss rate PMC1/PMC2
L3 miss ratio PMC1/PMC0

LONG
Formulas:
L3 request rate = MEM_LOAD_UOPS_RETIRED_L3_ALL/UOPS_RETIRED_ALL
L3 miss rate = MEM_LOAD_UOPS_RETIRED_L3_MISS/UOPS_RETIRED_ALL
L3 miss ratio = MEM_LOAD_UOPS_RETIRED_L3_MISS/MEM_LOAD_UOPS_RETIRED_L3_ALL
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This group measures the locality of your data accesses with regard to the
L3 cache. The L3 request rate tells you how data intensive your code is
or how many data accesses you have on average per instruction.
The L3 miss rate gives a measure how often it was necessary to get
cache lines from memory. And finally L3 miss ratio tells you how many of your
memory references required a cache line to be loaded from a higher level as they were not
stored in the L3 cache.
While the data cache miss rate might be given by your algorithm you should
try to get data cache miss ratio as low as possible by increasing your cache reuse.


