Hello,
i’m facing a problem that my tomcat seems to become unresponsive if it’s under
a certain load.
Most threads in threaddumps look like this:
"https-jsse-nio-21030-exec-133" #13306 daemon prio=5 os_prio=0 cpu=17099.37ms
elapsed=897.51s tid=0x00007f6270063b00 nid=0x1e5c38 in Object.wait()
[0x00007f6109df4000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait([email protected]/Native Method)
- waiting on <no object reference
available><monitor://%3cno%20object%20reference%20available%3e>
at
org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper.fillReadBuffer(NioEndpoint.java:1325)
- locked <0x000000050f48a720><monitor://%3c0x000000050f48a720%3e> (a
java.util.concurrent.Semaphore)
at
org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper.read(NioEndpoint.java:1226)
at
org.apache.coyote.http11.Http11InputBuffer.fill(Http11InputBuffer.java:805)
at
org.apache.coyote.http11.Http11InputBuffer.access$400(Http11InputBuffer.java:42)
at
org.apache.coyote.http11.Http11InputBuffer$SocketInputBuffer.doRead(Http11InputBuffer.java:1185)
at
org.apache.coyote.http11.filters.IdentityInputFilter.end(IdentityInputFilter.java:151)
at
org.apache.coyote.http11.Http11InputBuffer.endRequest(Http11InputBuffer.java:655)
at
org.apache.coyote.http11.Http11Processor.endRequest(Http11Processor.java:1192)
at
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:439)
at
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1743)
at
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
- locked <0x000000050f48a730><monitor://%3c0x000000050f48a730%3e> (a
org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper)
at
org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at
org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run([email protected]/Thread.java:833)
I’m suspecting a slow network. Does anybody have another idea?
Thanks, Christoph
