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1. Re: JBOSS Wildfly10 use CPU 100%
ctomc Nov 11, 2016 5:13 AM (in response to macber)OS, JDK, thread dump?
profiling output?
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2. Re: JBOSS Wildfly10 use CPU 100%
macber Nov 11, 2016 10:42 AM (in response to ctomc)Sorry, my configuration is:
- S.O. Windows 7 64 bit
- CPU 4 cores
- RAM 8GB
- JDK 1.8.0_92 64 bit
- Server JBOSS Wildfly 10.0.0 Final
- Memory for JBOSS: -Xms4096M -Xmx4096M -XX:MetaspaceSize=256M -XX:MaxMetaspaceSize=512M
JMC capture:
Thread dump:
"default task-6" #1090 prio=5 os_prio=0 tid=0x0000000034622000 nid=0x24e8 runnable [0x00000000222ce000]
java.lang.Thread.State: RUNNABLE
at io.undertow.servlet.spec.ServletOutputStreamImpl.underlyingBuffer(ServletOutputStreamImpl.java:448)
at io.undertow.servlet.spec.ServletPrintWriter.close(ServletPrintWriter.java:98)
at io.undertow.servlet.spec.ServletPrintWriterDelegate.close(ServletPrintWriterDelegate.java:99)
at io.undertow.servlet.spec.HttpServletResponseImpl.closeStreamAndWriter(HttpServletResponseImpl.java:470)
at io.undertow.servlet.spec.HttpServletResponseImpl.responseDone(HttpServletResponseImpl.java:560)
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:331)
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263)
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)Locked ownable synchronizers:
- <0x00000006f2a7fbb8> (a java.util.concurrent.ThreadPoolExecutor$Worker)
"default task-15" #1099 prio=5 os_prio=0 tid=0x0000000034629000 nid=0x2794 runnable [0x000000002e1fe000]
java.lang.Thread.State: RUNNABLE
at org.xnio.conduits.ConduitStreamSinkChannel.flush(ConduitStreamSinkChannel.java:162)
at io.undertow.channels.DetachableStreamSinkChannel.flush(DetachableStreamSinkChannel.java:119)
at org.xnio.channels.Channels.flushBlocking(Channels.java:63)
at io.undertow.servlet.spec.ServletOutputStreamImpl.flushInternal(ServletOutputStreamImpl.java:487)
at io.undertow.servlet.spec.ServletPrintWriter.close(ServletPrintWriter.java:106)
at io.undertow.servlet.spec.ServletPrintWriterDelegate.close(ServletPrintWriterDelegate.java:99)
at io.undertow.servlet.spec.HttpServletResponseImpl.closeStreamAndWriter(HttpServletResponseImpl.java:470)
at io.undertow.servlet.spec.HttpServletResponseImpl.responseDone(HttpServletResponseImpl.java:560)
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:331)
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263)
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)Locked ownable synchronizers:
- <0x00000006f2a78eb8> (a java.util.concurrent.ThreadPoolExecutor$Worker)In this case there are 2 threads that use 50% of the total CPU. It seems that this problem occurs more frequently with ajax requests.
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3. Re: JBOSS Wildfly10 use CPU 100%
jaikiran Nov 14, 2016 8:50 AM (in response to macber)- Server JBOSS Wildfly 10.0.0 Final
Can you please give the latest released WildFly 10.1.0.Final and see if it's still reproducible on that version? If it is, then someone can then look at figuring out the issue.
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4. Re: JBOSS Wildfly10 use CPU 100%
macber Nov 14, 2016 11:01 AM (in response to jaikiran)Ok, I've tested Wildfly version 10.1.0, but the problem keeps happening.
Debugging the code I have also seen that an infinite loop occurs in the method io.undertow.servlet.spec.ServletPrintWriter.close()
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5. Re: JBOSS Wildfly10 use CPU 100%
jaikiran Nov 15, 2016 12:54 AM (in response to macber)Thanks for testing against 10.1.0.Final. Would it be possible to attach a simple application which reproduces this issue? Furthermore, what locale is the JVM of the WildFly server, running under?