[rrd-users] rrdtool update only shows 'NaN' ?

[Tom Van Overbeke]

Hi List,


sorry to bother you again with the same question as yesterday, but i am at
my wit's end with rrdtool, i tried every possible variable for heartbeat and
step etc, but all i can get when i do rrdtool fetch is NaN ?

Could someone who has more experience with rrdtool create and populate the
test.rrd with the commands listed underneath, and check why a rrdtool fetch
will not return correct data ?


thanks a lot,

Tom.


---------------

Hi,

I created a RRD with the following command:

 rrdtool create --step 1200 DS:usr:GAUGE:1300:0:100 DS:sys:GAUGE:1300:0:100
DS:wio:GAUGE:1300:0:100 DS:idle:GAUGE:1300:0:100 RRA:AVERAGE:0.99:1:60

I then issued the following commands to update the rrd (see underneath)

If i run 'rrdtool dump test.rrd, i can see the real values, but when i try
to use the graph or fetch function, all i get is NaN.

i tried to use the following command to see the values:

rrdtool fetch test.rrd AVERAGE and i only saw NaN values.

What am i doing wrong ? (the idea is to import values from sar every 20
minutes between 06:00 and 20:00h)



rrdtool update test.rrd 1027837200:6:8:1:85
rrdtool update test.rrd 1027838400:6:8:0:86
rrdtool update test.rrd 1027839600:5:7:0:88
rrdtool update test.rrd 1027840800:4:5:0:91
rrdtool update test.rrd 1027842000:8:9:0:83
rrdtool update test.rrd 1027843200:8:10:0:82
rrdtool update test.rrd 1027844400:6:8:0:86
rrdtool update test.rrd 1027845600:6:8:0:85
rrdtool update test.rrd 1027846800:6:8:0:86
rrdtool update test.rrd 1027848000:6:8:0:87
rrdtool update test.rrd 1027849200:5:6:0:89
rrdtool update test.rrd 1027850400:5:7:0:88
rrdtool update test.rrd 1027851600:8:9:0:83
rrdtool update test.rrd 1027852800:6:8:0:87
rrdtool update test.rrd 1027854000:6:8:0:86
rrdtool update test.rrd 1027855200:5:7:0:88
rrdtool update test.rrd 1027856400:5:7:0:87
rrdtool update test.rrd 1027857600:6:8:0:86
rrdtool update test.rrd 1027858800:4:5:0:91
rrdtool update test.rrd 1027860000:5:7:0:87
rrdtool update test.rrd 1027861200:5:7:0:88
rrdtool update test.rrd 1027862400:6:8:0:86
rrdtool update test.rrd 1027863600:5:7:0:87
rrdtool update test.rrd 1027864800:6:8:0:87
rrdtool update test.rrd 1027866000:6:8:0:86
rrdtool update test.rrd 1027867200:5:6:0:89
rrdtool update test.rrd 1027868400:4:6:0:90
rrdtool update test.rrd 1027869600:6:8:0:85
rrdtool update test.rrd 1027870800:5:7:0:88
rrdtool update test.rrd 1027872000:5:7:0:88
rrdtool update test.rrd 1027873200:6:8:0:86
rrdtool update test.rrd 1027874400:5:7:0:87
rrdtool update test.rrd 1027875600:5:7:0:88
rrdtool update test.rrd 1027876800:4:5:0:91
rrdtool update test.rrd 1027878000:6:8:0:86
rrdtool update test.rrd 1027879200:5:7:0:88
rrdtool update test.rrd 1027880400:5:7:0:87
rrdtool update test.rrd 1027881600:6:8:0:86
rrdtool update test.rrd 1027882800:5:7:0:88
rrdtool update test.rrd 1027884000:5:7:0:87
rrdtool update test.rrd 1027885200:5:7:0:87
rrdtool update test.rrd 1027886400:4:6:0:90


--
Tom Van Overbeke
CCN/TC System & Network Admin

Atos Origin
Imperiastraat, 10
B-1930 Zaventem    BELGIUM
Tel: +32 2 712 2824
Fax: +32 2 402 07 50



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