Munin shows high iowait (see legend), but does not reflect it on graphs.

It has default config, except the graph_height (but the problem was from beginning, before the graph_height was chnaged).

What's wrong with it? Ububtu Oneiric 32 server.

$munin-run cpu config | grep iowait
graph_order system user nice idle iowait irq softirq
iowait.label iowait
iowait.draw STACK
iowait.min 0
iowait.type DERIVE
iowait.info CPU time spent waiting for I/O operations to finish when there is nothing else to do.
  • What shows munin log ?? (client and server) – B14D3 May 11 '12 at 7:39
  • [PERL WARNING] Use of uninitialized value $only_fqn in concatenation (.) or string at /usr/share/perl5/Munin/Master/GraphOld.pm line 1361 – Pavel Koryagin May 12 '12 at 4:27
  • That's in munin-graph.log. And nothing specific in other logs. Upgrade to Precise didn't help either. – Pavel Koryagin May 12 '12 at 4:27
  • Hmm under some reason the sum of values is up to 1600%, while system has 8 "CPUs" so Munin tries to plot values inside 800%. – Pavel Koryagin May 12 '12 at 6:14

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