Monthly Archives: November 2010

conftest and signal 11

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I have from time to time seen messages like the following when updating things on my FreeBSD systems

pid 85886 (conftest), uid 0: exited on signal 11 (core dumped)

Since they were pretty sporadic and nothing else was acting up it generally went uninvestigated.

Then a little time ago I updated a load of ports on my web host and the messages just became eerily frequent so I decided to dig into it a bit.
Looking through logs and compile output revealed nothing wrong.

Google to the rescue! I found out that this is actually GNU autoconf forcing this behaviour to make sure the system deals with a segfault correctly.

FreeBSD-questions@ cleared this up years ago, so I guess I should have checked at once and saved myself some worry..

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I’m in your munin

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On this somewhat binary day (101111), I just submitted my first Munin plugin to http://exchange.munin-monitoring.org and once it is approved it should be available at http://exchange.munin-monitoring.org/plugins/system_users/details/ .

It simply lets you graph the number of logged in users with Munin.
Example of the daily graph:
Daily graph in munin for logged in users

For an explanation of what munin is have a look here: http://munin-monitoring.org/
From the site:

Munin is a networked resource monitoring tool that can help analyze resource trends and “what just happened to kill our performance?” problems. It is designed to be very plug and play. A default installation provides a lot of graphs with almost no work.

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