[rrd-users] FW: RRDs and concurrency

Van Camp Jan Jan.VanCamp at health.fgov.be
Fri Aug 31 14:26:39 CEST 2007

Hello Sir ,

i would like to ask a question to you directly ,

already tried the general forum ,

i am trying to install a freeware monitoring tool munin which is perl based on a solaris 10 system ,

this tool uses rrdtool for its graphs ,

now : the problem is , i only found a compiled rrdtool without the perl bindings on the sunfreeware site ,

would you know of a site that offers the rrdtool with perl bindings ? (preferably already compiled version)

This would help me great deal !

Thank you in advance for your time and effort,

Yours sincerely,
Jan Van Camp

-----Original Message-----
From: rrd-users-bounces at lists.oetiker.ch
[mailto:rrd-users-bounces at lists.oetiker.ch]On Behalf Of Tobias Oetiker
Sent: Tuesday, August 28, 2007 8:57 AM
To: Sogandares, Frank M.
Cc: rrd-users at lists.oetiker.ch
Subject: Re: [rrd-users] RRDs and concurrency

Hi Frank,

> 1] Is there any search capability for this list?

google should have it all

> 2] One writer, multiple readers. While I am xporting data from an RRD
> (reading), ganglia is streaming data into that same RRD (writing).
> ganglia/gmetad is *always* writing to the RRD, and my application will
> always be reading from it. I want to assume that this behavior is safe
> and that the xport will not be corrupt (gmetad and the ganglia
> webserver work A-OK... so it seems safe)

this should be fine
> 3] Multiple concurrent writers to a single RRD. I'll assume this is
> near-criminal behavior. Is this correct? Does rrdtool or the rrdlibes
> support this kind of funny business?

this should be fine too

rrdtool uses file locking ... so if things do 'not work' then it is
a bug and I would love to hear about it ..


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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