It was the jdk1.6.0_25...switching to 1.6.0_05 fixed that issue....sweet. Dang JVM to JVM has buggy socket stuff, especially nio though I turned off nio to eliminate that I thought.
yes, I had done lots of thread dumps and all looked normal(except that two thread dumps 6 seconds apart were exactly the same). JVM must have an internal timeout of 5 minutes in the native code or something before it releases....I did see one nio thread even though I was using bio...maybe it was JMX or something. thanks, Dean On Wed, Sep 21, 2011 at 2:57 PM, Pavel Jbanov <[email protected]>wrote: > Did you look at the thread dump while it's hanging? I once found in one of > my setups that InetAddress.getLocalHost() was hanging because of local DNS > related issues. VisualVM is a great tool for debugging things like this. > > Pavel > > > On Wed, Sep 21, 2011 at 1:10 PM, Dean Hiller <[email protected]> wrote: > >> I am using jetty-distribution-7.4.5.v20110725 with jdk 1.6.0_26 >> >> I run 10 servers, start them all up and at least one sometimes two will >> encounter a 5 minute pause. I see the request come in on ethereal and have >> a filter that logs every request(first thing it does) and that request is >> logged 5 minutes after I see it in wireshark. I cannot telnet into the >> frozen server port 8080 BUT when another port is open like 8081, I can >> telnet into 8081 during this weird pause. I am wondering if it is an >> underlying lock in the JVM. There is no deadlocks according to jstack -m >> nor jstack -l command and all threads look find....all of them are stuck on >> read from socket for like 5 minutes exactly. >> >> I see there is a tcp timeout of 5 minutes in the tcp spec for something. >> I see no 5 minute timeouts for jetty. Anyone know any valid JVM >> configuration timeout values I could tweak and see if the pause period >> changes length at all? >> >> thanks, >> Dean >> >> >> _______________________________________________ >> jetty-users mailing list >> [email protected] >> https://dev.eclipse.org/mailman/listinfo/jetty-users >> >> > > _______________________________________________ > jetty-users mailing list > [email protected] > https://dev.eclipse.org/mailman/listinfo/jetty-users > >
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