[rrd-users] rrd database showing nan values at a particular time stamp

[Mr. Suhas Ghosh]

Hi All,
    I am using rrd database for drawing CPU , MEMORY and LOAD AVERAGE.
    my memory rrd is as follows
    RRDs::create "$rrd/mem.rrd",
           "-s 300",
           "DS:memuse:GAUGE:600:0:U",
           "DS:memfree:GAUGE:600:0:U",
           "DS:membuf:GAUGE:600:0:U",
           "DS:memcac:GAUGE:600:0:U",
           "DS:swpfree:GAUGE:600:0:U",
           "DS:swpuse:GAUGE:600:0:U",
           "RRA:AVERAGE:0.5:1:576",
           "RRA:AVERAGE:0.5:6:672",
           "RRA:AVERAGE:0.5:24:732",
           "RRA:AVERAGE:0.5:144:1460",
           "RRA:MAX:0.5:1:576",
           "RRA:MAX:0.5:6:672",
           "RRA:MAX:0.5:24:732",
           "RRA:MAX:0.5:144:1460";
The problem is that I am getting nan values in mem, cpu, and laod rrd
database at a particular time
Like for the following command it gives nan in the mentioned time in all
cpu, mem, load databases.
rrdtool fetch mem.rrd AVERAGE -r 300 -s -24h
1162284300 nan nan nan nan nan
1162284600 nan nan nan nan nan
in all other time stamp the above command giving values.
can you please help me.
Thanks

suhas


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