Christopher Schultz wrote:
Maybe use DMPJVM? Sorry for the through-Google link [PDF]:
THANKS! Never heard of such a thing until you brought it to my
attention, and it's enough of an eye-opener that I would have gladly
forgiven even a through-LMGTFY link.
DMPJVM looks like it may be just the thing. I don't want to risk
unnecessarily disrupting anybody right now, but later this afternoon,
I'm going to run some test shutdowns.
Among the responses I got on java40...@midrange.com, one fellow user
remarked that he'd been seeing the same phenomenon, and another had this
comment:
Tomcat won't shut down while there are non-daemon threads running.
Still another turned me on to WRKJVMJOB (yet another command I'd never
heard of). Applying option 11 of that ("Display Threads") to the
QP0ZSPWT job (the only active QP0ZSPWT in the system, evidently slaved
to the CATALINA job), I get:
Thread Name Status
0000515F main TIMW
00005162 JIT Compilatio > THDW
00005164 JVMTI event re > THDW
00005165 Signal Dispatc > THDW
00005167 Gc Slave Thread THDW
00005168 i5/OS informat > JVAW
0000516A MemoryPoolMXBe > THDW
0000516B Attach API wai > SEMW
0000516C GC Daemon THDW
0000516D Finalizer thread THDW
00005172 ContainerBackg > THDW
00005173 http-bio-8080- > TIMW
00005174 http-bio-8080- > THDW
00005175 http-bio-443-A > TIMW
00005176 http-bio-443-A > THDW
00005177 ajp-bio-8009-A > TIMW
00005178 ajp-bio-8009-A > THDW
000051BB http-bio-443-e > THDW
000051BC http-bio-443-e > THDW
000051BD http-bio-443-e > THDW
000051BE http-bio-443-e > THDW
000051BF http-bio-8080- > THDW
000051C0 http-bio-8080- > THDW
000051C1 http-bio-8080- > THDW
000051C4 http-bio-443-e > THDW
000051DD http-bio-443-e > THDW
000051DE http-bio-443-e > THDW
000051DF http-bio-443-e > THDW
000051E0 http-bio-443-e > THDW
000051E1 http-bio-443-e > THDW
000051E8 Java2D Disposer THDW
000051F6 http-bio-8080- > THDW
000051F7 http-bio-8080- > THDW
000051F8 http-bio-8080- > THDW
000051F9 http-bio-8080- > THDW
000051FA http-bio-8080- > THDW
000051FC http-bio-8080- > THDW
0000520B http-bio-8080- > THDW
(funny, a few seconds ago, it didn't have nearly that many threads;
evidently it is indeed currently in use). I note that option 12 appears
to be plumbed into DMPJVM.
--
JHHL
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