We've got a similar issue, though this in on Linux and using channelUnix/JNI instead
of normal tcp channelSocket.
We're using Apache2/mod_jk2 (built from tomcat-connectors-1.1M1).
On heavy load, there are over 3000 sockets open by one Tomcat/JVM, they don't seem to
go down again too while Tomcat is running.
(since File Descriptor limit on Solaris is lower normally (1024 or summat i think)
this would cause us heavy problems there too)
The Tomcats and Apache are restarted during the night to free up Memory, so socket
count goes down then.
However the application doesn't seem to be affected by this.
In catalina.out there are many errors like this:
org.apache.jk.common.ChannelUn receive
SEVERE: receive error: 120000
java.lang.Throwable
at org.apache.jk.common.ChannelUn.receive(ChannelUn.java:230)
at org.apache.jk.common.ChannelUn.processConnection(ChannelUn.java:282)
at org.apache.jk.common.AprConnection.runIt(ChannelUn.java:350)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:631)
at java.lang.Thread.run(Thread.java:536)
org.apache.jk.common.JniHandler nativeDispatch
SEVERE: nativeDispatch: error -3
java.lang.Throwable
at org.apache.jk.common.JniHandler.nativeDispatch(JniHandler.java:312)
at org.apache.jk.common.ChannelUn.send(ChannelUn.java:221)
at org.apache.jk.common.ChannelUn.invoke(ChannelUn.java:306)
at org.apache.jk.server.JkCoyoteHandler.doWrite(JkCoyoteHandler.java:249)
at org.apache.coyote.Response.doWrite(Response.java:530)
at org.apache.coyote.tomcat4.OutputBuffer.realWriteBytes(OutputBuffer.java:384)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:439)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:359)
at org.apache.coyote.tomcat4.OutputBuffer.writeBytes(OutputBuffer.java:411)
at org.apache.coyote.tomcat4.OutputBuffer.write(OutputBuffer.java:398)
at
org.apache.coyote.tomcat4.CoyoteOutputStream.write(CoyoteOutputStream.java:110)
at
org.apache.catalina.servlets.DefaultServlet.copyRange(DefaultServlet.java:1996)
at org.apache.catalina.servlets.DefaultServlet.copy(DefaultServlet.java:1745)
at
org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:1073)
at org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:506)
.....
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