>>> On 1/16/2008 at 9:52 AM, in message <[EMAIL PROTECTED]>, Douglas Nordwall <[EMAIL PROTECTED]> wrote: > are modules initiated at every collection time, or is it initiated at > ganglia start up and kept through the runtime? > > I'm asking because I am looking at doing per second metrics based on > the difference between the previously read value and the currently > read value. The code (dstat, from the DAG repository) conveniently > gives me nice classes for everything i'm looking at pulling out > (interrupts per second, context switches per second, etc), and even > goes so far as to check the value since the last time run, but of > course, this produces a big spike in the second run and a 0 value in > the first (thus, giving you a spike). I figure I can extract out the > values a couple of times to get rid of the spike in the instantiation > and then go from there. >
The init_handler for the module is only called once at the time when the module is loaded. The cleanup_handler is also only called once just before the module is unloaded when gmond is shutting down. The metric_handler itself is the only function that is called for each collection interval. Brad ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Ganglia-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ganglia-general
