Nagios Support Forum

The Busy Check{and idle check} only produces the same number every check. 44.1 & 55.8 every time. Please see above. I found an EMC Knowledgebase which confirms this with EMC performance engineering. Here it is:

Problem: Navicli getcontrol -busy -idle command does not return accurate values.

Fix: According to EMC Performance Engineering the best real-time indicator available is the "Storage Processor (SP) utilization value" from the "SP Properties" that is updated approximately every 60 seconds. This value is obtained by checking the SP if it is busy every 100 ms. In other words, the utilization indicates what percent of time the SP was busy. Unfortunately, the utilization value is not directly related to the Busy/Idle values obtained by Navisphere CLI commands because those values are derived from the last reboot of the SP whereas the utilization is a real-time calculation performed every minute.

A delta of the Busy/Idle tick values obtained with the navicli getcontrol -cbt command can be used and the calculation performed on them. (The -cbt switch returns the controller idle and busy ticks.) The results might be the same as the utilization values obtained from the Navisphere Manager GUI. Also, the navicli command can be used in a script.

Thanks for the info. I'll have a play and get back to you.

rredmond,
I did a quick mod of the script to do graphs of the busy and idle tick values using -cbt. As I've watched over time, the busy and idle tick values just keep increasing, they never decrease.

I've read the article you pointed me to and I get confused with this statement:

and the calculation performed on them

I've no idea what sort of calculation they are talking about. If we could work this out then perhaps we would be able to use the busy and idle tick values to generate something meaningful.

So unfortunately there is nothing else I can really do here, I wish I could be of more help.

Yea, thats what I was afraid of. I THINK what they are suggesting when they suggest "delta" and "calculation" is somehow figuring the change during a short period of time and somehow calculating a percentage based on that. Busy ticks increased 1000 in the last 2 minutes vs idle ticks increasing 500 in the last 2 minutes. CPU Busy Percentage 67%. Ill see what I can come up with......sounds like a completely different script however dont it?

Thank you for looking into this Box293 we appreciate it.

No problems

*script poke - ignore me*

Well that works! I used the -cbt command to take 2 minute intervals and then averaged the difference. The resulting average came within a percentage point of what the Navisphere GUI was displaying for utilization. ANY idea how I would script this? Im not sure if it is even possible to incorporate into the emc checks you have now but the numbers are looking good!

I am going to leave this open for Box293 as both of you have gone way over my head

Give me some time to have a play and see what I can come up with.

Can you do one thing please. Please reply with the exact formula you used along with an example so I am clear as to how you are getting your numbers.

Cheers.