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From "Jimmy Jones (JIRA)" <j...@apache.org>
Subject [jira] [Created] (QPID-5135) System stalling
Date Thu, 12 Sep 2013 14:36:51 GMT
Jimmy Jones created QPID-5135:

             Summary: System stalling
                 Key: QPID-5135
                 URL: https://issues.apache.org/jira/browse/QPID-5135
             Project: Qpid
          Issue Type: Bug
          Components: C++ Broker
    Affects Versions: 0.22
         Environment: RHEL5
            Reporter: Jimmy Jones

See threads on qpid-user: http://qpid.2158936.n2.nabble.com/System-stalling-tp7597317.html
and http://qpid.2158936.n2.nabble.com/Re-System-stalling-td7597940.html

See attached scripts which reproduce the issue. Running rx-test.pl followed by tx-test.pl
results in a system where the receiver can keep up with the producer (gets a message every
<1s) (tx-test 118% CPU, qpidd 97% CPU, rx-test 60% CPU). However, if you stop rx-test and
restart it (even after only a second or so), it starts to take 2s+ to receive messages, going
up to about 6s on my system, so the ring quickly fills and overflows. Even if the producer
is then stopped, messages are still only received every 3s - with qpidd on 100% CPU and the
receiver on 5%. Also the resident size of qpidd reaches 5GB, yet the queue is only 2GB.

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