Dear Valgrind users,
I am using Cachegrind to study the cache miss behavior of our program. I need
to collect the last level cache misses in bytes. According to the online manual
http://valgrind.org/docs/manual/cg-manual.html (related parts are copied at the
end for reference), Cachegrind outputs the number of misses. To my
understanding, the amount in bytes can be calculated as follows
Misses in bytes = (the number of misses) * (line size of the cache)
where the line size can be configured with option such as
--LL=<size>,<associativity>,<line size>. Is my understanding correct? If not,
could you tell me how to calculate the misses in bytes?
Copied from the manual:
Cache accesses for instruction fetches are summarised first, giving the number
of fetches made (this is the number of instructions executed, which can be
useful to know in its own right), the number of I1 misses, and the number of LL
instruction (LLi) misses.
Cache accesses for data follow. The information is similar to that of the
instruction fetches, except that the values are also shown split between reads
and writes (note each row's rd and wr values add up to the row's total).
Thanks and regards,
Xiang
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