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Sounds like a good idea. Cricket (another rrdtool front-end) has support voor top 20 usage, top 20 errors, top 20 anything. But i love to see support for top X in cacti.
Same here. I can't believe this feature has not been requested a lot more. For any larger network or ISP this is a must. Cricket does have such functionality although I like cacti much more.
Just wanted to add my vote to this feature request. Perhaps there could be a 3rd view tab next to "graphs" called "top 10" which would list all the graph template names on one side, and when you click one it shows 10 or 20 in order of most utilized to least on the right hand side...
As always, my development skills are not the best, but I'm glad to help where I can.
This would have to be stored after the poller ran, most effecient place to do it. And it would only be as of that moment, not a time in the past.
Also, I guess it would have to be grouped by graph template. That's the only safe way I can think to do it. Otherwise, we are looking at a lot of data to store in large enviroments.
[size=117][i][b]Tony Roman[/b][/i][/size]
[size=84][i]Experience is what causes a person to make new mistakes instead of old ones.[/i][/size]
[size=84][i]There are only 3 way to complete a project: Good, Fast or Cheap, pick two.[/i][/size]
[size=84][i]With age comes wisdom, what you choose to do with it determines whether or not you are wise.[/i][/size]
I'm not sure about cpu graphs, etc. But for bandwidth graphs couldn't you basically calculate the 95th percentile for the specified time period on each graph and then pick the top 10/20 of those to draw? That would give you a top ten list if you chose say 1 year.
I assume that since every graph is composed of (suprise) numbers, you could use this strategy for every graph type... on graphs that don't have the line as part of the template, you just use the 95th percentile as a ranking mechanism.
I need to brush up on my rrdtools but I think this should be possible. Just tossing out ideas.
While that's a good idea, I worry about processing time....
95th, btw, is calculated on the fly, when the graphs are generated.
I will ponder this..
[size=117][i][b]Tony Roman[/b][/i][/size]
[size=84][i]Experience is what causes a person to make new mistakes instead of old ones.[/i][/size]
[size=84][i]There are only 3 way to complete a project: Good, Fast or Cheap, pick two.[/i][/size]
[size=84][i]With age comes wisdom, what you choose to do with it determines whether or not you are wise.[/i][/size]
I was wondering about processing time as well, but like you said they are calculated on the fly anyway, so I guess at worst it has to run 2 rrd queries for every graph... one to calc the 95th and one to actually generate the graph... Then of course the script to place each graph in its correct spot depending on an array of collected 95ths...
There may be those that can't take the processor hit, our stuff runs on a little 1.7 celeron box polling about 450 items (not many by others standards I'm sure) but it keeps up ok.
I'm thinking this will be a plugin I write for the next major version of 0.9.0.
[size=117][i][b]Tony Roman[/b][/i][/size]
[size=84][i]Experience is what causes a person to make new mistakes instead of old ones.[/i][/size]
[size=84][i]There are only 3 way to complete a project: Good, Fast or Cheap, pick two.[/i][/size]
[size=84][i]With age comes wisdom, what you choose to do with it determines whether or not you are wise.[/i][/size]
