Re: [mrtg] Forks Option Information

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Thanks Tobi!

Can you explain this bit of text that's in the debug log?

2008-04-18 13:12:25 -- --fork: start undef for community@target
2008-04-18 13:12:25 -- --fork: end undef for community@target

Obviously, I replaced the actual community string and target.

Thanks for your help!

Brad

On Thu, Apr 17, 2008 at 11:33 AM, Tobias Oetiker <tobi@oetiker.ch> wrote:

> Hi Brad,
>
> Today Brad Lodgen wrote:
>
> > Hi everyone,
> >
> > I'm looking to find some information on the forking option and exactly
> how
> > it works. What I've been able to find is Tobi's information in
> changelogs
> > suggesting a fork for every router if you have a large config.
> >
> > -Can anyone explain exactly how the forking option effects MRTG from
> start
> > to finish, especially when running MRTG in daemon mode with hundreds of
> > included configs?
>
> the forks option causes mrtg to fork itself into multiple instances
> while gathering information from its targets (via snmp mostly).
>
> Once the data is in, it gets fed back to the master process which
> does all the post processing
>
> > -If you specify the forking option with 40, is 40 the minimum or maximum
> > forks...or does it always start 40 no matter what?
>
> mrtg will divide the snmp query tasks into 40 parts and go for it
> ... best is to run a few trial runs to find the optimal number for
> your setup ... it is not necessarily the more the merrier.
>
> > -How many targets go into each fork?
>
> see above
>
> > -Any additional information about forking would be much appreciated. I
> want
> > to fully understand forking so I can confidently leverage that power for
> > very large configs.
>
> well you have to ask ... :-)
>
> tobi
>
> >
> >
> > Thanks for any help,
> > Brad
> >
>
> --
> Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten
> http://it.oetiker.ch tobi@oetiker.ch ++41 62 213 9902
>

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Thanks Tobi!<br><br>Can you explain this bit of text that's in the debug log?<br><br>2008-04-18 13:12:25 -- --fork: start undef for community@target<br>2008-04-18 13:12:25 -- --fork: end undef for community@target<br><br>
Obviously, I replaced the actual community string and target.<br><br>Thanks for your help!<br><br>Brad<br><br><div class="gmail_quote">On Thu, Apr 17, 2008 at 11:33 AM, Tobias Oetiker &lt;tobi@oetiker.ch&gt; wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi Brad,<br>
<div class="Ih2E3d"><br>
Today Brad Lodgen wrote:<br>
<br>
&gt; Hi everyone,<br>
&gt;<br>
&gt; I'm looking to find some information on the forking option and exactly how<br>
&gt; it works. What I've been able to find is Tobi's information in changelogs<br>
&gt; suggesting a fork for every router if you have a large config.<br>
&gt;<br>
&gt; -Can anyone explain exactly how the forking option effects MRTG from start<br>
&gt; to finish, especially when running MRTG in daemon mode with hundreds of<br>
&gt; included configs?<br>
<br>
</div>the forks option causes mrtg to fork itself into multiple instances<br>
while gathering information from its targets (via snmp mostly).<br>
<br>
Once the data is in, it gets fed back to the master process which<br>
does all the post processing<br>
<div class="Ih2E3d"><br>
&gt; -If you specify the forking option with 40, is 40 the minimum or maximum<br>
&gt; forks...or does it always start 40 no matter what?<br>
<br>
</div>mrtg will divide the snmp query tasks into 40 parts and go for it<br>
.... best is to run a few trial runs to find the optimal number for<br>
your setup ... it is not necessarily the more the merrier.<br>
<div class="Ih2E3d"><br>
&gt; -How many targets go into each fork?<br>
<br>
</div>see above<br>
<div class="Ih2E3d"><br>
&gt; -Any additional information about forking would be much appreciated. I want<br>
&gt; to fully understand forking so I can confidently leverage that power for<br>
&gt; very large configs.<br>
<br>
</div>well you have to ask ... :-)<br>
<br>
tobi<br>
<div><div></div><div class="Wj3C7c"><br>
&gt;<br>
&gt;<br>
&gt; Thanks for any help,<br>
&gt; Brad<br>
&gt;<br>
<br>
</div></div><font color="#888888">--<br>
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten<br>
<a href="http://it.oetiker.ch" target="_blank">http://it.oetiker.ch</a> tobi@oetiker.ch ++41 62 213 9902<br>
</font></blockquote></div><br>

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