uint64_t cycle_count_begin; /* Cycle count at subbuffer start */
uint64_t cycle_count_end; /* Cycle count at subbuffer end */
uint32_t magic_number; /*
uint64_t cycle_count_begin; /* Cycle count at subbuffer start */
uint64_t cycle_count_end; /* Cycle count at subbuffer end */
uint32_t magic_number; /*