Re: [collectd] Native output plugin for Graphite
On Fri, Oct 28, 2011 at 1:57 AM, Gregory Szorc gregory.sz...@gmail.comwrote: Cool! You may be interested in my similar Python plugin. Mine initially had a very similar feature set as yours, but GitHub pull requests have slowly trickled in with new features, including deriving values. Feel free to reference/copy the ideas! https://github.com/indygreg/collectd-carbon Thanks, Greg! I started with your plugin and moved to a compiled solution because python wasn't available on some of the hosts I am monitoring. Your work was a big help to me and a great source of inspiration. I'm curious why you added the ability to send derived values to carbon. That feels contrary to the Graphite way of doing things, since derivative() and nonNegativeDerivative() provide the same functionality. -Scott ___ collectd mailing list collectd@verplant.org http://mailman.verplant.org/listinfo/collectd
Re: [collectd] Native output plugin for Graphite
Scott, I agree that deriving before input feels contrary to the Graphite way since functions are available to perform these actions. However, I put simple value differentiation in the initial release because I feel it would be a significant usability win: you could just click around in the Graphite UX and see graphs of the proper shapes, not a constantly growing hill, without taking any additional action to apply a function. Just yesterday I merged contributed code to add yet another differentiation feature, one that writes the time derivative between the difference. A number of people were bothered that Graphite was displaying values off by a factor of the Collectd collection interval (10[s] by default). Practically stated, CPU values were normalized at 1000 instead of 100, etc. Again, this is something that could be corrected by applying a scale on the data in Graphite. But, people /really/ wanted the feature. Both differentiation features can be toggled by plugin options and are off by default. So, users have a choice and everyone is happy, assuming they have Python installed ;) Greg On Fri, Oct 28, 2011 at 9:10 AM, Scott Sanders jssand...@gmail.com wrote: On Fri, Oct 28, 2011 at 1:57 AM, Gregory Szorc gregory.sz...@gmail.comwrote: Cool! You may be interested in my similar Python plugin. Mine initially had a very similar feature set as yours, but GitHub pull requests have slowly trickled in with new features, including deriving values. Feel free to reference/copy the ideas! https://github.com/indygreg/collectd-carbon Thanks, Greg! I started with your plugin and moved to a compiled solution because python wasn't available on some of the hosts I am monitoring. Your work was a big help to me and a great source of inspiration. I'm curious why you added the ability to send derived values to carbon. That feels contrary to the Graphite way of doing things, since derivative() and nonNegativeDerivative() provide the same functionality. -Scott ___ collectd mailing list collectd@verplant.org http://mailman.verplant.org/listinfo/collectd
Re: [collectd] Native output plugin for Graphite
Scott, Cool! You may be interested in my similar Python plugin. Mine initially had a very similar feature set as yours, but GitHub pull requests have slowly trickled in with new features, including deriving values. Feel free to reference/copy the ideas! https://github.com/indygreg/collectd-carbon Greg On Mon, Oct 3, 2011 at 11:27 AM, Scott Sanders jssand...@gmail.com wrote: Hi everyone, I was interested in visualizing metrics from a group of collectd nodes in graphite and decided to create an output plugin for collectd in C to handle this task. The plugin is based heavily on the existing write_http plugin. If you think this may be useful, please grab a copy from https://github.com/jssjr/collectd-write_graphite and let me know what you think. I'm using the plugin successfully on a fair number of production hosts without any issues. Any testing and feedback the community can provide would be greatly appreciated. Some improvements I intend to make in the short term: - Queue send buffer if flush is called but Carbon host isn't available - Derive metrics before sending to Carbon depending on type Thanks! -Scott Sanders ___ collectd mailing list collectd@verplant.org http://mailman.verplant.org/listinfo/collectd ___ collectd mailing list collectd@verplant.org http://mailman.verplant.org/listinfo/collectd
