[rrd-developers] rrdupates per second

Tobias Oetiker tobi at oetiker.ch
Tue Jun 10 07:58:35 CEST 2008

Hi Bernhard,

Yesterday Bernard Li wrote:
> I will dig deeper to confirm whether my OS (CentOS 4.x) supports
> fadvise and whether the rrdtool RPM was built correctly with that
> option enabled.

centos runs on some vintage 2.6.9 kernel (?) it may be that the
fadvise implementation there is not working correctly.

dave plonka wrote a little tool that lets you check if the fadvise
stuff is working ...





> > does this mean ganglia calls rrd_update and links librrd ? or does
> > it call out?
> Yes, that is the case AFAIK.  The code in question is viewable here:
> http://ganglia.svn.sourceforge.net/viewvc/ganglia/branches/monitor-core-3.1/gmetad/rrd_helpers.c?view=markup
> Thanks,
> Bernard

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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