Re: Munin weirdness under heavy CPU loading

tai wrote:
> Hello,
> I am using munin-1.3.2 on Gentoo Linux (AMD64 arch), hw: AMD64X2-4800 
> (Toledo)/1 GB RAM; no hw problems at all. Kernel 2.6.18-gentoo-r6 at the 
> moment, but the next mentioned strange phenomenon is present under different 
> version of 2.6.17 to 2.6.19 kernels.
> I noted very strange property of munin: under heavy loading the munin fails 
> from time to time to supply newly acquired data into RRD database. It is the 
> most significant at the produced (and enclosed) picture of uptime.
> I tried to prolongate timeout setting up to 240 sec (the fetching period is 5 
> minutes, so timeout 4 minutes seems to be adequate), but it did not help.
> There is no dependency on the number of plugins, called by munin system, the 
> same is happening even with 'uptime' plugin only.
> I do not know, if similar problem was already discussed on forum, I did not 
> find anything similar.
> Do you have some ideas about a solution?

Please look at the munin-update log.  Do the indicate that data all the
data is collected in 5 minutes every 5 minutes?  It is somewhat likely
that your "heavy loading" stops munin from doing the work it needs every
5 minutes.

Nicolai


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