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From "James Strachan" <james.strac...@gmail.com>
Subject Re: Could not accept connection after too many messages in the queue
Date Fri, 13 Oct 2006 16:27:18 GMT
It looks like you are just running out of file descriptors; file
descriptors are used for sockets as well as files and other OS things.
Usually its a simple change on your OS to bump that value up to
something much higher.

On 10/13/06, igah <weiqingh@mail.com> wrote:
>
> hi there,
>
> i have a number of stomp clients that post messages continously to a single
> queue. if the consumer on that queue doesn't process the messages fast
> enough, i am seeing this error in the activemq (version 4.0.1) log:
>
> ERROR TransportConnector             - Could not accept connection:
> java.net.SocketException: Too many open files
> java.net.SocketException: Too many open files
>         at java.net.PlainSocketImpl.socketAccept(Native Method)
>         at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
>         at java.net.ServerSocket.implAccept(ServerSocket.java:450)
>         at java.net.ServerSocket.accept(ServerSocket.java:421)
>         at
> org.apache.activemq.transport.tcp.TcpTransportServer.run(TcpTransportServer.java:123)
>         at java.lang.Thread.run(Thread.java:595)
>
> jmx console shows that the following for the queue:
> DequeueCount 6847
> EnqueueCount 40800
> QueueSize 34593
>
> lsof shows the activemq process opens about 1000 files (most of them TCP
> sockets) at the time of the failure. if i add more consumers to process
> those messages, then the test can run for a long time with no failure.
>
> how can i address this issue? am i missing some tuning configuration
> parameters? (the activemq instance is configured to use mysql)
>
> thanks in advance.
>
> --
> View this message in context: http://www.nabble.com/Could-not-accept-connection-after-too-many-messages-in-the-queue-tf2437563.html#a6797112
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>
>


-- 

James
-------
http://radio.weblogs.com/0112098/

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