nagios threads and process model

[Yishai Hadas]

Hi List,

 

Where can be found some information about Nagios threads and process
model:

*	How many threads are running?   
*	What are their main tasks? 
*	Are there some threads that are starting doing some work then
terminating? 
*	What about the process model (parent/child - fork) - When fork
is done? How it relates to the threads model? 

 

Is there any documentation about those issues?

Can someone give here some light?

 

 

This information can help understanding what is reasonable to do and
what is not.

For example assuming that process_performance_data is enabled then
service_perfdata_command is called periodically,

Nagios uses perfdata_timeout which is by default 5 seconds to wait for
the command and if hasn't finished it will be terminated.

 

 

If there is some work that might take in the command much more time e.g.
1 minute, is it reasonable to it in this command and let's Nagios to
wait for it 1 minute?

Which other Nagios's tasks will be delayed? 

 

 

Thanks in advance,

 

Yishai.

 

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