Hi,
I'm using the sampling capability of perfmon to record last level cache
misses. I'm using commands such as the following:
taskset -c 4 pfmon --smpl-outfile=pfout.out --long-smpl-periods=1
--show-time -e l3_cache_misses:0x27 ./a.out
The output file contains instruction pointer (IP) values related to the last
level cache (LLC) misses. I'm interested in the actual addresses that miss
at the LLC. I wonder if there is away to obtain such address traces. I've
tried to obtain such traces using IBS (not within perfmon) on AMD machines,
but the accuracy of the miss trace is too low.
If there's no other way, is it possible to hack the perfmon code to record
actual miss addresses instead of IPs? If yes, can anyone guide me into the
right direction (for example telling me which files I need to look at in
order to do this)
I'm not really an expert in linux and perfmon, so the more explanations the
better!
Thanks in advance
Mohammad
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