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Posted to jcs-users@jakarta.apache.org by an...@axa.com.au on 2004/05/21 03:11:18 UTC
Thread Control for Element Event Queue Processor - Number of Threads too
high
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor threads
are nearly 16. I want to control that and limit it to 5-6 as when
JCS will go to Linux (production) 16 threads are very costly for that
environment. How can I restrict that to some limited number of threads?
Here is thread dump: (All seems to be waiting)
"CacheEventQueue.QProcessor-1" daemon prio=5 tid=0x28b74d80 nid=0xb9c
waiting on monito
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at org.apache.jcs.engine.CacheEventQueue.take(Unknown Source)
at org.apache.jcs.engine.CacheEventQueue.access$500(Unknown
Source)
at org.apache.jcs.engine.CacheEventQueue$QProcessor.run(Unknown
Source)
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x28c8ee18 nid=0xa10
waiting on moni
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x290ee810 nid=0xc78
waiting on moni
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x29578b98 nid=0x15fc
waiting on mon
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x28c8ece0 nid=0x854
waiting on moni
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x28aba450 nid=0xd74
waiting on moni
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x290c3870 nid=0x1534
waiting on mon
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x2895ca78 nid=0x3cc
waiting on moni
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"CacheEventQueue.QProcessor-1" daemon prio=5 tid=0x2930ea50 nid=0x994
waiting on monito
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at org.apache.jcs.engine.CacheEventQueue.take(Unknown Source)
at org.apache.jcs.engine.CacheEventQueue.access$500(Unknown
Source)
at org.apache.jcs.engine.CacheEventQueue$QProcessor.run(Unknown
Source)
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x290d1780 nid=0x5fc
waiting on moni
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x29019308 nid=0x8bc
waiting on moni
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x28871440 nid=0xfb8
waiting on moni
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x28b09640 nid=0xd30
waiting on moni
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x28992e00 nid=0xbbc
waiting on moni
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x28989ad0 nid=0x9d8
waiting on moni
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"cache-PrepareThread" daemon prio=5 tid=0x28b01e80 nid=0x168 runnable
[0x26d4f000..0x26
at java.lang.Object.wait(Native Method)
at
weblogic.persist.TxIndexedFileImpl$PrepareThread.run(TxIndexedFileImpl.java:
"cache-CommitThread" daemon prio=5 tid=0x2882ad88 nid=0xedc runnable
[0x26cdf000..0x26c
at java.lang.Object.wait(Native Method)
at
weblogic.persist.TxIndexedFileImpl$CommitThread.run(TxIndexedFileImpl.java:6
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x287dccd0 nid=0xc24
waiting on moni
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x28928710 nid=0xac0
waiting on moni
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
"SSLListenThread.Default" prio=5 tid=0x288b2250 nid=0x92c runnable
[0x269df000..0x269df
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:463)
at java.net.ServerSocket.implAccept(ServerSocket.java:238)
at javax.net.ssl.impl.SSLServerSocketImpl.accept(Unknown Source)
at weblogic.t3.srvr.ListenThread.run(ListenThread.java:263)
"ListenThread.Default" prio=5 tid=0x288cbd70 nid=0x644 runnable
[0x265df000..0x265dfdbc
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:463)
at java.net.ServerSocket.implAccept(ServerSocket.java:238)
at
com.wily.introscope.agent.probe.net.ManagedServerSocket.accept(ManagedServer
at
weblogic.socket.WeblogicServerSocket.accept(WeblogicServerSocket.java:26)
at weblogic.t3.srvr.ListenThread.run(ListenThread.java:263)
"ElementEventQueue.QProcessor-1" daemon prio=5 tid=0x288d28e0 nid=0x898
waiting on moni
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:415)
at
org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue
at
org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEven
at
org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(Element
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