On 01/26/2012 12:07 PM, Bryan Thompson wrote: > Dave, > > There is undoubtably fat in the XML. However, I think that you would get far > more savings by giving the client a means to request which data they are > interested in. Right now it sends everything each time, right? It would be > nice if you could provide a regex for what you needed. One option would be > to put up an http end point which allowed query parameters that describe the > data of interest. I've done this in a similar system in Java. Not sure what > options are out there in C for embedded httpd. > > Bryan >
Such a thing already exists for requesting data from gmetad, the ganglia-monitor xml exchange however doesn't have any notion of limiting scope. Typically there is only one consumer of data from ganglia-monitor via xml, which is gmetad AND gmetad wants all the data every time, so I don't know that any sort of scope limit on request would be that great of a gain really. The json bit OTOH doesn't currently exist AND as such doesn't have any known consumers or consumption patterns. Adding some provider side filtering may be desirable, but I would speculate that most of the time the ganglia-monitor access pattern will be "tell me everything" and the per grid/cluster/host/group/metric filtering would happen up at the gmetad or gmetad-equivalent layer. I.E. maybe you replace gmetad with a message queue, the filtering would be provided by the topic subscription mechanism of your message queue system. -Dave ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Ganglia-developers mailing list Ganglia-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-developers
