[Xymon] how to get the CPU max usage info

[ROZEK Michal (Prestataire)]

Thank You for Your response. You helped me a lot!!

[root at va2005 vu2328]# rrdtool fetch vmstat.rrd AVERAGE --start 1387015833 --end 1387188633 |tail | awk '{print $17}' |awk '{printf "%.2f\n", $1}'
98.67
99.00
98.83
99.00
99.00
99.00
99.00
99.00
98.67

Now I substract this number from 100 and it works great!
Awesome!


De : Jeremy Laidman [mailto:jlaidman at rebel-it.com.au]
Envoyé : vendredi 13 décembre 2013 01:04
À : ROZEK Michal (Prestataire)
Cc : Xymon at xymon.com
Objet : Re: [Xymon] how to get the CPU max usage info

On 12 December 2013 21:18, ROZEK Michal (Prestataire) <michal.rozek.externe at cnp.fr<mailto:michal.rozek.externe at cnp.fr>> wrote:
In xymon we can see the graph :

<CPU Utilization graph>

Could You tell me how to get the values of the "% CPU Busy" listed on the bottom ? I have tried a lot of things but it doesn't work

The "CPU Utilization" graph with "CPU busy" is defined in graphs.cfg in the [la1] section.  This shows that the data source is "cpu_idl" in the vmstat.rrd file.  Note that the graph definition subtracts this "cpu_idl" (idle percentage) number from 100 to get the busy percentage.

You can get the last few entries of cpu_idl by running:
rrdtool fetch /path/to/vmstat.rrd AVERAGE | tail
The contents of the RRD file come from the [vmstat] section of the client data messages.  This is typically taken from the output of "vmstat" from the idle column (normally abbreviated "id").  To get the average idle percentage over 5 minutes, Xymon runs "vmstat 300 2".  If you want to get the idle percentage without waiting 5 minutes, you can type "vmstat 5" and it will repeatedly give 5-second averages forever.  Note that the first line in the vmstat output is the average of the metrics since last boot.
Cheers
Jeremy

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