Hello,
I have a patch that will produce the sum cpu (check Perfwatcher patches
for collectd). I think this would be easy to adapt for the average.
But before any work on this, have you tried
https://collectd.org/wiki/index.php/Plugin:Aggregation/Config ?
Can it fit your needs ?
Question to developers : there are common and simple needs for cpus
where the aggregation plugin may be a solution. But can't it be built in
collectd to be smaller into memory ? In other words, would you accept a
patch for computing the sum and average total cpu even if the
aggregation can do it ?
Regards,
Yves
Le 2013-06-17 02:00, William Salt a écrit :
Im using the processes plugin to find specific processes via regex, and
monitoring their cpu usage, this is the total time spent in jiffies
(milliseconds) across all cores.
In graphite, i am dividing it by the number of cpu cores i have on a
machine then turning that into percent. this gives me a percentage of
total
cpu usage across all cores for that process.
However, i cannot ascertain in graphite the exact number of cpus a node
has, it differs greatly, and its not scalable to have static values in
graph query strings like this, nor efficient to work this out when
rendering a graph.
I wondered if someone could patch the plugin to allow a flag to produce
the
average cpu use across all cores? grabbing the number of cpus
from /proc/cpuinfo and dividing the metric by that? bonus if it had a
flag
to output a percent!
Cheers
Will
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