[ims@li19-162 ~]$ grep ^cpu /proc/stat
cpu  24092152 11250058 6593078 3165413444 27722384 0 68526 10211925
cpu0 15668438 2776785 2209170 761840941 25394297 0 43043 3405215
cpu1 2656302 2796856 1497932 801261831 872025 0 8743 2244200
cpu2 3019664 2820916 1461009 800988832 752089 0 8501 2286879
cpu3 2747747 2855499 1424965 801321839 703971 0 8238 2275629

and

user.value 24092153
nice.value 11250058
system.value 6593080
idle.value 3165416776
iowait.value 27722399
irq.value 0
softirq.value 68526

hoopycat got a good point, try re-initializing your rdd file(s)

Yeah I tried letting munin re-init the rrd files and that didn't fix it. The issue appears to be the "MAX" is set at 400 for the idle rrd file. This is based on the fact that there are 4 cpu's so the max value shouldn't be above 400. However, it looks like my data is in the 700's so the rrd get's NaN for everything. If I remove the maximum value I get data, but it doesn't make much sense. I still wonder if something is wrong with the kernel...

Oh and the version of cpu that was posted to pastebin is a little older and missing the maximum value setting.

Pastebin your copy of the cpu script? I'll give it a shot here...

Here you are, you'll notice the "MAX" setting on the rrd.

http://p.linode.com/2509

Indeed, that'd be the difference... aight, I have it installed here and will advise in awhile once it's had a chance to spin.

Yep, your script also breaks for me:

The CPU script on mine:


The CPU script from yours:


Might want to open a bug report with the Munin folks... weird, that. (Secretly, I kinda like it without the idle, but that's just me )