Thanks a lot. I will calculate with your guide. Regards On Mon, Mar 28, 2016 at 4:33 PM, Matt Wringe <[email protected]> wrote:
> ----- Original Message ----- > > From: "David Dimas" <[email protected]> > > To: [email protected] > > Sent: Friday, March 25, 2016 11:45:05 AM > > Subject: How to calculate Percentage CPU Usage > > > > Hello > > How are you? > > I am running curl command with your help successfully. > > > > Now I am going to calculate percentage CPU Usage. I have read this doc. > > [ > > > https://github.com/openshift/origin-metrics/blob/master/docs/hawkular_metrics.adoc#calcuating-percentage-cpu-usage > > ] > > > > In this guide, How can I get 'cpu/usage' and 'uptime'. > > I am running this command to get 'cpu/usage'. > > > > curl -k -H "Authorization: Bearer > iCm-Mglj1TvBPd_VoJesqoqIAbVM2psZcXrykyshBU" > > -H "Hawkular-tenant: sample" -X GET > > > https://hawkular-metrics.example.com/hawkular/metrics/counters/data?tags=descriptor_name:cpu/usage,pod_namespace:openshift-infra\&buckets=1\&start=`date > > -d -10minutes +%s%3N` | python -m json.tool > > > > Result is [{'min': 555115703.0, 'samples': 120, 'end': 1458837494033, > > 'median': 1391865412.971584, 'avg': 26785974599.89168, 'max': > > 144149182129.0, 'start': 1458836895027, 'empty': False}]. > > > > so I think 'cpu/usage' is 'avg' value from this result. it this right? > > The cpu/usage metric is a cumulative metric, which means that it always > increases unless the container has been restarted (at which point it resets > back to zero). For your example, the 'avg' value will give you the average > over the 10 minute window you specified. Since the value is cumulative and > always increasing (assuming no restarts, to find how much as used in that > 10 minute window, you would take the max value minus the min value > > > After this, I calculated the percentage of a CPU core used with the > following > > function. > > %core = 'cpu/usage' / ('uptime' * 1000000) > > I am getting 0.0005564113359207296 as core result. Is this right value? > > Simplifying a bit taking the result from the example above (and assuming > no container restart) > > 'cpu/usage' as 'max' - 'min' = 143594066426 nanoseconds > cheating by taking 'uptime' as 'end' - 'start' milliseconds = 599006 > milliseconds = 599006000000 nanoseconds > > 143594066426 nanoseconds / 599006000000 nanoseconds = 0.239720581 = > 23.9720581% > > So in the last 10 minutes, that container used 23.97% of a cpu core > (assuming I didn't make some simple calculation error above) > > > > > Please give me a word of advice. I need your help. > > Best Regards > > > > _______________________________________________ > > dev mailing list > > [email protected] > > http://lists.openshift.redhat.com/openshiftmm/listinfo/dev > > >
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