What exactly do you mean by 'never stops serving' - do you mean that the
page GET never completes? The browser just hangs at that page? Or that
you have observed a stream of data.
Regards
Alan Chaney
daniel steel wrote:
all,
We are running tomcat 6.0.14 (jdk 1.6.03) on Windows server with NIO
connector. After some time, one of the thread starts using 50% of the cpu and
that thread never stops serving.I was able to match the thread id from process
explorer with nid of jstack thread dump and this is the jstack thread dump
taken at different intervals. any ideas on whats hapeping will be helpful.
thanks
dan
dump 1 at 0 mintues
http-8080-exec-5" daemon prio=6 tid=0x308d2400 nid=0x167c runnable [0x323ef000..0x323efb18]
java.lang.Thread.State: RUNNABLE
at
org.apache.coyote.http11.InternalNioOutputBuffer$SocketOutputBuffer.doWrite(InternalNioOutputBuffer.java:794)
at
org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:126)
at
org.apache.coyote.http11.filters.GzipOutputFilter$FakeOutputStream.write(GzipOutputFilter.java:164)
at java.util.zip.GZIPOutputStream.finish(GZIPOutputStream.java:95)
at
org.apache.coyote.http11.filters.GzipOutputFilter.end(GzipOutputFilter.java:122)
at
org.apache.coyote.http11.InternalNioOutputBuffer.endRequest(InternalNioOutputBuffer.java:396)
at
org.apache.coyote.http11.Http11NioProcessor.action(Http11NioProcessor.java:1080)
at org.apache.coyote.Response.action(Response.java:183)
at org.apache.coyote.Response.finish(Response.java:305)
at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:276)
at
org.apache.catalina.connector.Response.finishResponse(Response.java:486)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:287)
at
org.apache.coyote.http11.Http11NioProcessor.process(Http11NioProcessor.java:887)
at
org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:696)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:2009)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
dump 2 at 5 minutes
"http-8080-exec-5" daemon prio=6 tid=0x308d2400 nid=0x167c runnable [0x323ef000..0x323efb18]
java.lang.Thread.State: RUNNABLE
at
org.apache.coyote.http11.InternalNioOutputBuffer.addToBB(InternalNioOutputBuffer.java:612)
- locked <0x178afd28> (a org.apache.coyote.http11.InternalNioOutputBuffer)
at
org.apache.coyote.http11.InternalNioOutputBuffer.access$000(InternalNioOutputBuffer.java:44)
at
org.apache.coyote.http11.InternalNioOutputBuffer$SocketOutputBuffer.doWrite(InternalNioOutputBuffer.java:794)
at
org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:126)
at
org.apache.coyote.http11.filters.GzipOutputFilter$FakeOutputStream.write(GzipOutputFilter.java:164)
at java.util.zip.GZIPOutputStream.finish(GZIPOutputStream.java:95)
at
org.apache.coyote.http11.filters.GzipOutputFilter.end(GzipOutputFilter.java:122)
at
org.apache.coyote.http11.InternalNioOutputBuffer.endRequest(InternalNioOutputBuffer.java:396)
at
org.apache.coyote.http11.Http11NioProcessor.action(Http11NioProcessor.java:1080)
at org.apache.coyote.Response.action(Response.java:183)
at org.apache.coyote.Response.finish(Response.java:305)
at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:276)
at
org.apache.catalina.connector.Response.finishResponse(Response.java:486)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:287)
at
org.apache.coyote.http11.Http11NioProcessor.process(Http11NioProcessor.java:887)
at
org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:696)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:2009)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
dump 3 at 10 minutes
"http-8080-exec-5" daemon prio=6 tid=0x308d2400 nid=0x167c runnable [0x323ef000..0x323efb18]
java.lang.Thread.State: RUNNABLE
at
org.apache.coyote.http11.InternalNioOutputBuffer.addToBB(InternalNioOutputBuffer.java:612)
- locked <0x178afd28> (a org.apache.coyote.http11.InternalNioOutputBuffer)
at
org.apache.coyote.http11.InternalNioOutputBuffer.access$000(InternalNioOutputBuffer.java:44)
at
org.apache.coyote.http11.InternalNioOutputBuffer$SocketOutputBuffer.doWrite(InternalNioOutputBuffer.java:794)
at
org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:126)
at
org.apache.coyote.http11.filters.GzipOutputFilter$FakeOutputStream.write(GzipOutputFilter.java:164)
at java.util.zip.GZIPOutputStream.finish(GZIPOutputStream.java:95)
at
org.apache.coyote.http11.filters.GzipOutputFilter.end(GzipOutputFilter.java:122)
at
org.apache.coyote.http11.InternalNioOutputBuffer.endRequest(InternalNioOutputBuffer.java:396)
at
org.apache.coyote.http11.Http11NioProcessor.action(Http11NioProcessor.java:1080)
at org.apache.coyote.Response.action(Response.java:183)
at org.apache.coyote.Response.finish(Response.java:305)
at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:276)
at
org.apache.catalina.connector.Response.finishResponse(Response.java:486)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:287)
at
org.apache.coyote.http11.Http11NioProcessor.process(Http11NioProcessor.java:887)
at
org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:696)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:2009)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
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