95th Percentile Question

infuseweb · Post by **infuseweb** » Sun Feb 08, 2004 2:36 pm

Ok, I'm probably showing my ignorance here, and I apologize. Graphs are charting fine, but the 95th percentile is showing as 0 (graphs have been running about 4 days). Is there a reason why this is happening and how do I fix it?

Post by **raX** » Wed Feb 11, 2004 12:13 am

Perhaps the scale is set to high? According the graph variables section of the manual, the second argument specifies the scale for the 95th percentile number. I believe this number is set to '6' by default which would scale everything to megabits with two digit precision. I would try changing this number to '3' or even '0' in the graph template.

-Ian

infuseweb · Post by **infuseweb** » Wed Feb 11, 2004 12:43 am

It was set to 6 and "max". I set it to 3, but no difference. I'll try 0. Should I also set to current or total? The manual doesn't explain max, just current and total. Max IS an option, isn't it?

Post by **raX** » Wed Feb 11, 2004 12:45 am

Yes, 'max' is an option, I would recommend setting it to that if possible.

-Ian

infuseweb · Post by **infuseweb** » Wed Feb 11, 2004 1:09 am

Hmm, still showing 0. Is there anything else I should check for?

TIA

Post by **raX** » Wed Feb 11, 2004 1:13 am

Do you have a data source selected for the graph item you are applying the 95th percentile to?

(Apply the patch provided in this forum before making changes to a graph template item)

-Ian

infuseweb · Post by **infuseweb** » Wed Feb 11, 2004 1:20 am

I think so, but I'm not for sure. What page should I be on? On the Graph Item Inputs page, Data Source is selected and numerous item check boxes are selected. Am I barking up the wrong tree?

Post by **raX** » Wed Feb 11, 2004 1:28 am

You want to be one screen back under where it says "Graph Template Items". Just select an item to see if it is associated with a data source.

-Ian

infuseweb · Post by **infuseweb** » Wed Feb 11, 2004 1:42 am

Yes, it says "Interface - Traffic - (taffic_out)".

infuseweb · Post by **infuseweb** » Wed Feb 11, 2004 2:50 pm

Let me ask this. Do you need a full month of data to calculate the 95th percentile, or should it start calculating right away?

Post by **raX** » Thu Feb 12, 2004 12:07 am

It should start calculating after two samples, so maybe 10 minutes but definitely not a month.

-Ian

infuseweb · Post by **infuseweb** » Thu Feb 12, 2004 12:13 am

Darn. Guess I'm at a loss as to why it's not working. Still reading 0 after a day

Post by **raX** » Thu Feb 12, 2004 9:36 pm

Unfortunately beyond this it's really hard to tell exactly what Cacti is seeing behind the scenes and why it is reporting '0'. I would be willing to take a quick look at your installation, just to see if I notice anything obvious. If you're interested, just send me an e-mail.

-Ian

infuseweb · Post by **infuseweb** » Thu Feb 12, 2004 11:02 pm

Ok, I'll PM you. Thanks!

infuseweb · Post by **infuseweb** » Thu Feb 19, 2004 6:13 pm

Anyone else ever run into this problem? Need some hints. Tried everything I can think of, but 95th percentile still shows up as 0. Bummer

95th Percentile Question

95th Percentile Question

Who is online