This is what I am seeing on all the .rrd files.

filename = "disk,C.rrd" rrd_version = "0003" step = 300 last_update = 1259855293 ds[pct].type = "GAUGE" ds[pct].minimal_heartbeat = 600 ds[pct].min = 0.0000000000e+00 ds[pct].max = 1.0000000000e+02 ds[pct].last_ds = "32" ds[pct].value = NaN ds[pct].unknown_sec = 193 ds[used].type = "GAUGE" ds[used].minimal_heartbeat = 600 ds[used].min = 0.0000000000e+00 ds[used].max = NaN ds[used].last_ds = "12679708" ds[used].value = NaN ds[used].unknown_sec = 193 rra[0].cf = "AVERAGE" rra[0].rows = 576 rra[0].cur_row = 479 rra[0].pdp_per_row = 1 rra[0].xff = 5.0000000000e-01 rra[0].cdp_prep[0].value = NaN rra[0].cdp_prep[0].unknown_datapoints = 0 rra[0].cdp_prep[1].value = NaN rra[0].cdp_prep[1].unknown_datapoints = 0 rra[1].cf = "AVERAGE" rra[1].rows = 576 rra[1].cur_row = 235 rra[1].pdp_per_row = 6 rra[1].xff = 5.0000000000e-01 rra[1].cdp_prep[0].value = NaN rra[1].cdp_prep[0].unknown_datapoints = 3 rra[1].cdp_prep[1].value = NaN rra[1].cdp_prep[1].unknown_datapoints = 3 rra[2].cf = "AVERAGE" rra[2].rows = 576 rra[2].cur_row = 259 rra[2].pdp_per_row = 24 rra[2].xff = 5.0000000000e-01 rra[2].cdp_prep[0].value = NaN rra[2].cdp_prep[0].unknown_datapoints = 21 rra[2].cdp_prep[1].value = NaN rra[2].cdp_prep[1].unknown_datapoints = 21 rra[3].cf = "AVERAGE" rra[3].rows = 576 rra[3].cur_row = 294 rra[3].pdp_per_row = 288 rra[3].xff = 5.0000000000e-01 rra[3].cdp_prep[0].value = NaN rra[3].cdp_prep[0].unknown_datapoints = 189 rra[3].cdp_prep[1].value = NaN rra[3].cdp_prep[1].unknown_datapoints = 189

From: Mcmahon, Chris [mailto:Chris.Mcmahon at fallonclinic.org] Sent: Wednesday, December 02, 2009 11:00 AM To: hobbit at hswn.dk Subject: [hobbit] NAN Graph Issue

I'm having issues with graphing, we are monitoring about 700 PC's. Graphing was working perfectly until we changed to centrally controlled configs. We now get NAN next to every value, the only graph that works is the "conn".

Thanks, Chris