High latencies problem.

[Markus.Almroth at teliasonera.com]

I had a similar problem. For me the reason was notification and
performance data plugins taking too long time. Nagios waits and does
nothing while these are executed.

My solution was to append performance data to a separate buffer
periodically and executing the plugins in cron. For now the latency is
acceptable, but if the number of notifications increase, I will probably
have to do something similar with them

In my opinion there seems to be slightly too many types of events that
locks Nagios until they're finished. 

Best Regards
/Markus Almroth

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