[rrd-users] NaNs caused by NFS

Tobias Oetiker tobi at oetiker.ch
Tue Apr 22 23:37:48 CEST 2008

Hi Matthew,

it could be caused by memorymapping ... try compiling rrdtool
without mmap support


Today Matthew M. Boedicker wrote:

> I have solved the problem I was having of my rrd files being mostly NaNs.
> I was doing updates every 5 minutes and logging each one. The data looked
> fine and there were no errors. When I did a fetch or graph it came out mostly
> NaN with a few runs of real data occasionally.
> This was fixed by moving the rrd files from an NFS mount to a local partition.
> Anyone have a guess as to how NFS could cause this?
> Thanks,
> Matthew M. Boedicker
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Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten
http://it.oetiker.ch tobi at oetiker.ch ++41 62 213 9902

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