We are running WM 6.5 SP3 on two different IS instances on RedHat Linux (say A and B). The work done in these instances is similar, however, instace A has some scheduled tasks that instance B does not.
There is a significant difference between number of threads running on A vs. B (B has a lot more).
Service Threads 9 131
System Threads 165 208
Service Threads 28 556
System Threads 347 380
I took a thread dump from each and browsed through them. The significant difference between the two seems to be the extra “Service Thread Pool” items that look like this:
“Service Thread Pool” prio=1 tid=0x08404988 nid=0x5fbe in Object.wait() [0x602bf000…0x602bf198]
at java.lang.Object.wait(Native Method)
- locked <0x877bd808> (a com.wm.app.b2b.server.TMPooledThread)
How can I tell what these threads are doing or investigate why these two IS instances have such a significant difference in number of threads?
ThreadDump492-20081006.log (79.6 KB)
ThreadDump491-20081006.log (189 KB)