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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>From my recent performance tests, I’d say the benefits of using
daemon mode (particularly if you’re using it in conjunction with RRDTool 1.4.x
and its memory-mapped IO) far outweigh any configuration headaches. It is far
more efficient in disk IO, the only headaches being that (a) you cannot control
the sequence or precise timing of the individual checks, (b) you need to tune
the number of Forks: appropriately for your system’s capacity, and (c) you need
to restart the daemon if you change the config files.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>To get around (c) I’ve been working on a patch for MRTG that
forces a re-read if the cfg file has been modified but this has not yet been submitted.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I really think you’re overestimating the network load of the
SNMP checks. We’re running a few thousand cheks every 5 min here and we’re not
coming close to the 100Mb network capacity.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Steve<o:p></o:p></span></p>
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<hr size=2 width="100%" align=center>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><b><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Steve
Shipway<o:p></o:p></span></b></p>
<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>ITS
Unix Services Design Lead<o:p></o:p></span></p>
<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>University
of Auckland, New Zealand<o:p></o:p></span></p>
<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Floor
1, 58 Symonds Street, Auckland<o:p></o:p></span></p>
<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><i><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#595959'>Phone:
+64 (0)9 3737599 ext 86487<o:p></o:p></span></i></p>
<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><i><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#595959'>DDI:
+64 (0)9 924 6487<o:p></o:p></span></i></p>
<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><i><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#595959'>Mobile:
+64 (0)21 753 189<o:p></o:p></span></i></p>
<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><i><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#595959'>Email:
<a href="mailto:s.shipway@auckland.ac.nz"><span style='color:#595959'>s.shipway@auckland.ac.nz</span></a><o:p></o:p></span></i></p>
<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span lang=EN-GB
style='font-size:18.0pt;font-family:Webdings;color:green'>P</span><span
lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:blue'> </span><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial Narrow","sans-serif";
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color:blue'> </span><span lang=EN-GB style='font-size:7.5pt;font-family:"Verdana","sans-serif";
color:navy'><o:p></o:p></span></p>
<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><i><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></i></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><b><span
lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
mrtg-bounces+s.shipway=auckland.ac.nz@lists.oetiker.ch
[mailto:mrtg-bounces+s.shipway=auckland.ac.nz@lists.oetiker.ch] <b>On Behalf Of
</b>Arvon Griffiths<br>
<b>Sent:</b> Tuesday, 28 September 2010 10:27 a.m.<br>
<b>To:</b> mrtg@lists.oetiker.ch<br>
<b>Subject:</b> Re: [mrtg] New MRTG install... Run as Daemon and RRD setup?<o:p></o:p></span></p>
</div>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>This is a Linux
box... I know 350+ smtp transactions isn't that much traffic but, I'm
polling for traffic and errors and I'm using the box for alerting circuits
up/dn and plan on processing traps on it so, I wanted to be as efficient as
possible to it.<o:p></o:p></span></p>
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<div>
<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>That being said, it
sounds like the headaches involved in running it in Daemon mode are greater
than the performance gain. Opinions?<o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
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<pre><o:p> </o:p></pre></div>
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