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From Brad Spry <>
Subject Keeping http-8443 threads in check (Apache Tomcat/6.0.29)
Date Fri, 17 Jul 2015 20:53:19 GMT
After ingesting copious amounts of objects into Fedora Commons, the
system returns to an idle state.

However, even with the system idle, http-8443 residue remains behind,
chewing up RAM and CPU for no good reason:

"http-8443-16" daemon prio=10 tid=0x000000004237b800 nid=0x206a
runnable [0x00007fb69deeb000]
"http-8443-15" daemon prio=10 tid=0x0000000042215000 nid=0x2069 in
Object.wait() [0x00007fb69dfed000]
"http-8443-14" daemon prio=10 tid=0x0000000042145000 nid=0x2068 in
Object.wait() [0x00007fb69dbae000]
"http-8443-13" daemon prio=10 tid=0x0000000042008000 nid=0x2067 in
Object.wait() [0x00007fb69ddd5000]
"http-8443-12" daemon prio=10 tid=0x00000000420d0800 nid=0x1fc0 in
Object.wait() [0x00007fb69bd3e000]
"http-8443-11" daemon prio=10 tid=0x0000000041f6f000 nid=0x16ec in
Object.wait() [0x00007fb69d9f8000]
"http-8443-10" daemon prio=10 tid=0x0000000042907800 nid=0x8aa
runnable [0x00007fb69b837000]
"http-8443-9" daemon prio=10 tid=0x0000000043a50800 nid=0x7a1d in
Object.wait() [0x00007fb69b738000]
"http-8443-8" daemon prio=10 tid=0x0000000042248000 nid=0x7a1c in
Object.wait() [0x00007fb69b61c000]
"http-8443-7" daemon prio=10 tid=0x0000000041e94000 nid=0x764e
runnable [0x00007fb69dcc6000]
"http-8443-6" daemon prio=10 tid=0x000000004336a000 nid=0x6a1b
runnable [0x00007fb69ba39000]
"http-8443-5" daemon prio=10 tid=0x0000000042142800 nid=0x6a1a
runnable [0x00007fb69be3e000]
"http-8443-4" daemon prio=10 tid=0x000000004201d800 nid=0x6a19
runnable [0x00007fb69bb3a000]
"http-8443-3" daemon prio=10 tid=0x0000000042238800 nid=0x6984
runnable [0x00007fb6a9fa1000]
"http-8443-2" daemon prio=10 tid=0x0000000043133800 nid=0x6983
runnable [0x00007fb6aa5a7000]
"http-8443-1" daemon prio=10 tid=0x000000004226f800 nid=0x5ee2
runnable [0x00007fb6aa9ab000]

I've experimented with placing connectionTimeout="20000" on the AJP
and org.apache.coyote.http11.Http11AprProtocol <Connector>'s, but have
observed no change in behavior.

I'm writing to ask of anyone has any knowhow or advice for
automatically pruning idle <Connector>'s like this?   Thank you ahead
of time.


Brad Spry
Atkins Library
UNC Charlotte

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