This must have to do with the threading model of the O/S. It shows as different processes the threads inside the single JBoss process.
It has nothing to do with JBoss.
Interesting. My guess:
I've already heard about threading in Solaris, but never saw it, as I now Solaris have a lightweight threads and Java can use them, so threads started may be seem in ps. That must be it, threads are being launched. I may be Tomcat, how many processes are started? Tomcat uses a Thread Pool, so check server.xml and see if the numbers (e.g. max, min) match what you see. (suposing your app doesn't use threads itself)
Thanks for the responses.
The extra processes reflect JBoss threads for the following reasons:
I've never see Solaris threads shown as processes before.
We start only a single JBoss process,
Also I've seen that each one of these additional processes do take memory (3Gb, as the original JBoss process), and when I stop them the memory is released.
The extra processes are seen only a few hours after JBoss is running, and not consistently.
Hi idweiss ,
We are having the same issue, with exactly the same configuration.
So finally :
- Are the entries processes or threads ?
- Are they consuming or sharing the memory ?
- Is there a command to chack what's the real memory consumption ?
The entries are threads and they are sharing memory.
For real memory consumption, about the best way I know how is to note the difference in memory usage as reported by top with the app running and not running. For a full discussion, see http://virtualthreads.blogspot.com/2006/02/understanding-memory-usage-on-linux.html