uint64_t apply;           /* Checkpoint handles applied */
    uint64_t apply_time;      /* Checkpoint applied handles gather time */
    uint64_t drop;            /* Checkpoint handles drop */
    uint64_t drop_time;       /* Checkpoint handles drop time */
    uint64_t lock;            /* Checkpoint handles lock */
    uint64_t lock_time;       /* Checkpoint handles lock time */
    uint64_t meta_check;      /* Checkpoint handles metadata check */
    uint64_t meta_check_time; /* Checkpoint handles metadata check time */
    uint64_t skip;            /* Checkpoint handles skipped */
    uint64_t skip_time;       /* Checkpoint skipped handles gather time */