On Friday 19 December 2008 19:04:26 FreeBSD wrote:
> This server is very lightly used, so most of the time if the swap is
> getting used it shows that something is going wrong. This warning
> already proved usefull once, so I don't think I'm going to change it.
Swapping is a symptom of a symptom - or just the machine doing it's job.
Better let nagios monitor:
- fork rate by observing kern.lastpid sysctl over time
- nr. of processes running
- top 10 processes sorted by resident memory (res not size in top(1))
Those are the actual symptoms of something going wrong that can cause a system
to start swapping heavily. 3MB swap is not 'heavily' and is nothing to worry
about.In fact, a high fork rate can DOS a system pretty well, without the
machine ever going into swap.
--
Mel
Problem with today's modular software: they start with the modules
and never get to the software part.
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