struct group_run_stats {
uint64_t max_run[DDIR_RWDIR_CNT], min_run[DDIR_RWDIR_CNT];
uint64_t max_bw[DDIR_RWDIR_CNT], min_bw[DDIR_RWDIR_CNT];
struct group_run_stats {
uint64_t max_run[DDIR_RWDIR_CNT], min_run[DDIR_RWDIR_CNT];
uint64_t max_bw[DDIR_RWDIR_CNT], min_bw[DDIR_RWDIR_CNT];