Nagios Support Forum

I’ d like to fine tune the check_load nrpe check threshold values for solaris multi core systems, when I use the TH values provided in the nrpe sample config for a single processor 8 core system
, I’m getting warning.

# /usr/local/nagios/libexec/check_load -w 15,10,5 -c 30,25,20
WARNING - load average: 8.62, 7.79, 7.11|load1=8.625;15.000;30.000;0; load5=7.793;10.000;25.000;0; load15=7.105;5.000;20.000;0;

Where I tried with –r option,
# /usr/local/nagios/libexec/check_load -r -w 15,10,5 -c 30,25,20
OK - load average: 0.24, 0.26, 0.25|load1=0.242;15.000;30.000;0; load5=0.259;10.000;25.000;0; load15=0.245;5.000;20.000;0;

1. May I know the TH values : w 15,10,5 -c 30,25,20 are for single core?
2. What the appropriate values of w, c THs are for load to use with –r option?
3. Any other formulas can be used to calculate the TH values?

Thanks

Every server is different. I can refer you to a few documents that help explain how load TH is calculated. The -r option divides the load average by the number of cpus, making it easier to set thresholds for larger installations without editing configs on a per host basis. That said, there are no "hard, fast" rules for these thresholds. Servers that rarely have load issues may have lower thresholds while heavy load servers should have the thresholds tuned upwards.
http://www.teamquest.com/pdfs/whitepaper/ldavg1.pdf
http://en.wikipedia.org/wiki/Load_average
http://blog.hissohathair.com/2008/07/tu ... hecks.html

Thanks so much