-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Today, Mark Seger wrote forth saying...
> Maybe this is an opportunity for documentation enhancements OR for a > pointer to the correct documentation if the answer is already there > because I didn't see any answers in ganglia.pdf. > > I'm interested in 2 things: > - control of how many gmonds receive mulitcast data as I assume in large > networks its not necessary for all of them to do so > - control of the grainularity of the polling/thresholds on individual > data elements > > The first place I looked was in gmond.conf and it looks like the answer > to my first question might be to set "deaf on". Is that right? that's right. making a gmond deaf means that it will send its metric data but not save any incoming information from remote gmonds. this means you will not be able to connect to a local port to get cluster stats. > As for the second question, I have no idea where to go to make any of > these changes. Can someone point me to the appropriate location? I'm > also trying to figure out just how much traffic will get transmitted > over the network at any one time and it sounds like from the equation in > ganglia.txt, 16+136*n_nodes+364*n_metrics, that this would represent a > worst case for the binary data size but I have no idea how this would > map into XML sizes. Anyone have any insights into that? that is the memory footprint for storing data (very small actually). if you want more technical details about the network/cpu/memory load (or lack thereof) take a look at this link... http://www.cs.berkeley.edu/~massie/papers/ganglia-twocol.pdf ganglia 2.x is not very configurable when it comes to changing the time and value threshold for each metric. actually.. i guess i should say there is no configuration options for that. but.. there is a way to do it in the code that is not too painful (hopefully). take a look at the ./gmond/metric.h file specifically the metric array. the entire behavior of gmond is controlled but this array. edit it to your liking and recompile. let me know if the source comments are not enough to get you through. good luck! - -matt -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iD8DBQE+5jwtVmIXr0CKtmERAh8QAJkBTMJHI73Tfj6UdHU6gcl2yuj8+ACfQMBO BlR81t758bmxIjIe4sn2/vQ= =emfA -----END PGP SIGNATURE-----
