rrddim_add(st, "calls", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
rrddim_add(st, "bad_format", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
rrddim_add(st, "calls", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
rrddim_add(st, "bad_format", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);