Hi, we're a research group at UC Berkeley starting a new project and we're thinking of using ganglia for part of it. We use Rubis -- an open-source eBay-like J2EE application -- running on 1-5 servers (webserver, JBoss, Rubis + a database) and we need to monitor the whole system. We want to monitor the standard metrics (CPU, mem, IO, ...), but we're mainly interested in the applications. We'll heavily instrument the applications to report a lot of metrics. For example, each Java Bean would report some statistics about its usage, how long it takes to execute requests, number of warnings, errors, exceptions and so on. We'd like to get all the data to one machine and do some analysis in real-time. For some of the metrics we'll need to get updates every second.
Does anybody have experience with such setup? Basically, the number of hosts would be pretty small, but the number of metrics could be large (100s or 1000s) and for some of them we'll need very fast updates. Thanks, Peter
