nik- that is a great idea! i would be easy to add that functionality to ganglia but to be honest i didn't think about it before. you're right i assumed that ganglia would be used for gauges but there is also a need to support other historical types.
do you have an idea of the Right way to implement data sources other than gauges? i'll put some mental energy to it to and add it. right now i'm focusing hard on integrating the execution environment into ganglia (along with globus integration, building a C/C++ API, and other requests from users). luckily i think this is a simple problem to solve: use the present XML spec (or add an attribute to the METRIC element) and create a special case which is recognized by ganglia-rrd.pl. thanks for the ideas -matt Today, Nik Clayton wrote forth saying... > Does Ganglia support data sources other than gauges? > > I.e., where the data is not a fluctuating value that represents an > entities value at a particular time (such as 'memory used'), but is a > count of data that only ever increments (such as 'Octets received' on > a network interface). > > See the 'rrdcreate' man page from rrdtool if you're not sure what I'm > talking about. > > I had a look at the XML output format in the documentation, which > doesn't imply anything other than 'gauge' is supported, and all the > pages at ganglia.mrcluster.org show graphs of gauges rather than > clusters. > > So I assume the answer is 'no'. > > If that is the case, are there any plans to support counters with > Ganglia? > > N >
