[rrd-users] Unknown entries

[jeff at unixisgod.com]

I can't figure out why I am getting the big spaces in my graphs (and rrds
of course)
Here is the link: http://gurugeek.com/jeff/rrd/ (this has only been
running a few hours so the others are blank for a reason ;D

I set my heartbeats rather high and I know data is getting updated because
I have a script setup to print the times and values to the screen.

Here is the info from my rrd:
%rrdtool info gateway.rrd
filename = "gateway.rrd"
rrd_version = "0001"
step = 60
last_update = 1049779478
ds[ping].type = "GAUGE"
ds[ping].minimal_heartbeat = 10
ds[ping].min = 0.0000000000e+00
ds[ping].max = NaN
ds[ping].last_ds = "UNKN"
ds[ping].value = 5.4240600000e+02
ds[ping].unknown_sec = 0
rra[0].cf = "AVERAGE"
rra[0].rows = 60
rra[0].pdp_per_row = 1
rra[0].xff = 0.0000000000e+00
rra[0].cdp_prep[0].value = NaN
rra[0].cdp_prep[0].unknown_datapoints = 0
rra[1].cf = "AVERAGE"
rra[1].rows = 288
rra[1].pdp_per_row = 5
rra[1].xff = 0.0000000000e+00
rra[1].cdp_prep[0].value = 3.4381644828e+01
rra[1].cdp_prep[0].unknown_datapoints = 1
rra[2].cf = "AVERAGE"
rra[2].rows = 336
rra[2].pdp_per_row = 30
rra[2].xff = 0.0000000000e+00
rra[2].cdp_prep[0].value = 2.1101721485e+02
rra[2].cdp_prep[0].unknown_datapoints = 8
rra[3].cf = "AVERAGE"
rra[3].rows = 720
rra[3].pdp_per_row = 60
rra[3].xff = 0.0000000000e+00
rra[3].cdp_prep[0].value = 2.1101721485e+02
rra[3].cdp_prep[0].unknown_datapoints = 8
rra[4].cf = "AVERAGE"
rra[4].rows = 365
rra[4].pdp_per_row = 1440
rra[4].xff = 0.0000000000e+00
rra[4].cdp_prep[0].value = 9.9880810780e+02
rra[4].cdp_prep[0].unknown_datapoints = 249

But here is some Fetch output:

%rrdtool fetch gateway.rrd AVERAGE --start -600
                     ping

1049778900:  1.2327900000e+01
1049778960:  3.1900666667e+01
1049779020:  NaN
1049779080:  1.2708200000e+01
1049779140:  1.0769766667e+01
1049779200:  NaN
1049779260:  1.4485500000e+01
1049779320:  8.2278000000e+00
1049779380:  NaN
1049779440:  1.1668344828e+01
1049779500:  1.1868433333e+01
1049779560:  NaN


I'm not sure what the cause is because the heartbeats are high and I know
information is being sent to rrdtool every 10 seconds:

1049779488:8.015
1049779498:7.486
1049779508:7.345
1049779518:7.151
1049779528:24.183
1049779538:8.049
1049779548:8.041
1049779558:7.815

Any thoughts?

Thanks,
Jeff

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