Graphite

Time granularity question

Asked by Ask Bjørn Hansen

Hi,

I'm looking to see if it'd make sense to replace rrdtool with graphite for graphing the server performance of the systems in the NTP Pool ( http://www.pool.ntp.org/ ).

I'm using 60 second retention intervals (I'll explain below), but only get 2-3 measurements an hour, so the graphs zoomed in are pretty spotty looking. Is there a way around that:

http://dl.dropbox.com/u/25895/graphite/render-1d.png
http://dl.dropbox.com/u/25895/graphite/render-6h.png

Basically -- could the lines be made continuous between the plot points, even when the whisper data has a lot of "nulls".

The reason I have 60 second intervals is to be able to graph different measuring sources (that don't "go off" at the same time or even at quite the same intervals). Also I'd like to be able to "turn up" the measurement intervals for debugging for a particular server for a period.

Ask

Question information

Language:
English Edit question
Status:
Answered
For:
Graphite Edit question
Assignee:
No assignee Edit question
Last query:
Last reply:
Revision history for this message
Launchpad Janitor (janitor) said : 		#1

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

Revision history for this message
Ask Bjørn Hansen (askbjoernhansen) said : 		#2

Mr Janitor: But the question wasn't answered ...

Revision history for this message
Michael Leinartas (mleinartas) said : 		#3

The lineMode rendering flag may be what you're looking for. It can be found in the composer interface in Graph Options. Try the "connected" mode. It will basically connect the dots with lines.
Alternatively you might try the keepLastValue function. Any null values will then keep the value of their previous point, filling in any holes in the graph with horizontal lines.

Can you help with this problem?

Provide an answer of your own, or ask Ask Bjørn Hansen for more information if necessary.

To post a message you must log in.