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[gyre007 <question219798@xxxxxxxxxxxxxxxxxxxxx>]

New question #219798 on Graphite:
https://answers.launchpad.net/graphite/+question/219798

I'm trying to plot CPU usage in percentage of usage at certain point of time. To do this I take the samples from /proc/stat - these are absolute samples and they looks like this:

app01.cpu.total.user    45997117    1358816118
app01.cpu.total.nice    165511          1358816118
app01.cpu.total.system  36679893    1358816118
app01.cpu.total.idle    3519926642  1358816118
app01.cpu.total.iowait  3854916         1358816118
app01.cpu.total.irq 2553            1358816118
app01.cpu.total.softirq 189828          1358816118
app01.cpu.total.steal   4497297         1358816118
app01.cpu.total.guest   0           1358816118


The function I'm using to display these is:
scale(divideSeries(stats.app01.cpu.total.user,sumSeries(stats.app01.cpu.total.*)), 100)
Which should basically display the results in percentage. 

I noticed that I get the same results when I plot the graph like this:
asPercent(stats.app01.cpu.total.user,sumSeries(stats.app01.cpu.total.*))

My problem with this is that I noticed that the curve is constantly growing - by tiny little fraction but it is growing - which I can't really make much sense of why. In fact it should be fairly flat and dropping and growing depending on the CPU usage at the time when the sample was taken. I would certainly NOT expect a growing trend. But I might missing something hence I'm turning here for some help.

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