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POHow do I increase available sockets using Mina on Ubuntu?
 

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  1. POHow do I increase available sockets using Mina on Ubuntu?
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    <p>How do I increase the number of sockets that may be opened on ubuntu when using Mina 2.0.8? Once my server reaches around ~1700 connections, I get this in my logs: <code><pre> 2013-01-24 04:21:49,465 [NioSocketAcceptor-1] WARN o.a.m.util.DefaultExceptionMonitor - Unexpected exception. java.io.IOException: Too many open files at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method) ~[na:1.6.0_20] at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:163) ~[na:1.6.0_20] at org.apache.mina.transport.socket.nio.NioSocketAcceptor.accept(NioSocketAcceptor.java:159) ~[mina-core-2.0.8-SNAPSHOT.jar:na] at org.apache.mina.transport.socket.nio.NioSocketAcceptor.accept(NioSocketAcceptor.java:50) ~[mina-core-2.0.8-SNAPSHOT.jar:na] at org.apache.mina.core.polling.AbstractPollingIoAcceptor$Acceptor.processHandles(AbstractPollingIoAcceptor.java:506) ~[mina-core-2.0.8-SNAPSHOT.jar:na] at org.apache.mina.core.polling.AbstractPollingIoAcceptor$Acceptor.run(AbstractPollingIoAcceptor.java:447) ~[mina-core-2.0.8-SNAPSHOT.jar:na] at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64) [mina-core-2.0.8-SNAPSHOT.jar:na] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [na:1.6.0_20] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [na:1.6.0_20] at java.lang.Thread.run(Thread.java:636) [na:1.6.0_20] </pre></code></p> <p>How is this possible when my file handles are set to a max of 331278 for hard and soft? Running "ulimit -n" reports</p> <pre>331287</pre> <p>and running "sysctl fs.file-nr" reports</p> <pre>fs.file-nr = 1728 0 331287</pre> <p>Contents of /etc/security/limits.conf file</p> <pre> * hard nofile 331287 * soft nofile 331287 </pre>
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    1. USPaul Gregoire
    1. USPaul Gregoire
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      1. POHow do I increase available sockets using Mina on Ubuntu?
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      1. POHow do I increase available sockets using Mina on Ubuntu?
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    1. COAre you sure the limits are set properly for the user running the web app? ulimits are set on a per-user basis.
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      1. POHow do I increase available sockets using Mina on Ubuntu?
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    2. CODid you try to set the limits into `limits.conf`? Maybe what you see with `ulimit -n` is valid only for the current shell user but not for the user running Mina daemon
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      1. POHow do I increase available sockets using Mina on Ubuntu?
      1. USDavide Berra
    3. COI added the limits content above; the daemon starts via init.d using sudo
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      1. POHow do I increase available sockets using Mina on Ubuntu?
      1. USPaul Gregoire
 

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