First of all, PAPI is awesome - thanks for the indispensable PAPI library.
I am trying to find the cache miss rates in Pentium 4 processor, but have been unsuccessful. I'm not even able to create an eventset with just the PAPI_L1_LDM event in it (or the native variant replay_event:l1_ld_miss:nbogus). Adding the event to an empty event set fails with PAPI_ECNFLCT, which is strange because the event set is just empty. PAPI_L2_LDM too fails similarly. Every other event works without any problems.
I see that someone else had a similar question in the forum, but it had no answers. I will greatly appreciate any help trying to figure this out.