Cheshire Cat Computing

Hi,

I am looking at calculating the 95th percentile using the 5 min average data for the past one month. I have enabled the "extendedtime" option in the router.conf. I have also configured "RRDRowCount[]=8640" in the .cfg file.

Can I use the routers2.cgi to display the 1 month graph with 5 min average and calculate the 95th percentile for the month?

Thanks
Rgds

Routers2 will automatically use whichever RRA provides the most accurate result.

This means that, if you have a hugely extended 5-min RRA (as you have), the monthly 95th Percentile calculations will use this instead of the normal 2-hr RRA usually used for monthly 95th Percentile calculations. So, you don't need to do anything; its already doing what you want it to.

_________________
Steve Shipway
UNIX Systems, ITSS, University of Auckland, NZ
Woe unto them that rise up early in the morning... -- Isaiah 5:11

Its partially working. I can see that the weekly chart is using 5 min average data when I export the CSV file. However, the monthly chart is still using 2 hrs average.

I set my RRDRowCount to be 8640, is this correct?

Thanks
Rgds

This problem is rectified by change the value from 8640 to ~9000. This is to cater for the month with 31 days.

In fact, it is better to set it to over 9600 as the displayed graph has 400 cdp at 2hrs per cpd, which is 9600 5-min samples. If you try to set it to the bare minimum you might hit a fencepost error (where you lack only one cdp to get the 5min resolution so it drops back to 2hour)

_________________
Steve Shipway
UNIX Systems, ITSS, University of Auckland, NZ
Woe unto them that rise up early in the morning... -- Isaiah 5:11