I'm using code XL to measure CPU L2 requests, L2 misses, CPU clocks on a Carrizo system, which has 4 cores.
for example, I got the following data:
CPU clocks: 426794
L2 request: 281557
L2 misses: 115241
L2 fill/writeback: 275666
my question is about clocks, since there are four cores in this APU, is the CPU clocks the sum of all clocks elapsed on all 4 cores? which of the following is true?
426794 = clock elapsed from Core 1 + ... clocks elapsed from Core 4
426794 = total sample time, it is not related to the number of cores