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https://issues.apache.org/jira/browse/DIRMINA-1069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16101063#comment-16101063
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Wenzhi Wu commented on DIRMINA-1069:
------------------------------------
Hi,Emmanuel:
Actually I need to establish many connections between my process and
server.So I need to create a lot of Connector instances.
Using Mina 2.0.3,it consumes about 30 file handles,such as socket,pipe and
epoll.It is the same as Mina 2.0.16.
The code is as below:
SocketConnector connector = new NioSocketConnector();
connector.setConnectTimeoutMillis(300);
MspMinaCodecFactory factory = new MspMinaCodecFactory();
factory.setMinaDecoder(new MspMinaProtocolDecoder());
factory.setMinaEncoder(new MspMinaProtocolEncoder());
KeepAliveMessageFactory heartBeatFactory = new
MspClientKeepAliveMessage();
KeepAliveFilter heartBeat = new
KeepAliveFilter(heartBeatFactory,IdleStatus.READER_IDLE,KeepAliveRequestTimeoutHandler.CLOSE);
heartBeat.setForwardEvent(true);
heartBeat.setRequestInterval(10);
heartBeat.setRequestTimeout(30);
connector.getFilterChain().addLast("codec", new
ProtocolCodecFilter(factory));
connector.getFilterChain().addLast("heart", heartBeat);
connector.setHandler(new DmsMinaIoClientHandler(peerID,
task.getTaskID()));
InetSocketAddress addr;
try {
addr = DmsUtils.parseAddress(peerAddr);
} catch (ConfigError e) {
e.printStackTrace();
return false;
}
ConnectFuture cf = connector.connect(addr);
cf.awaitUninterruptibly(350);
boolean isConnected = cf.isConnected();
if(!isConnected){
connector.dispose();
}
Above is the case that I establish one connection using JDK 1.7.
Thanks!
> Number of pipe and eventpoll goes up about 30 when connecting to server with
> NioSocketConnector
> ------------------------------------------------------------------------------------------------
>
> Key: DIRMINA-1069
> URL: https://issues.apache.org/jira/browse/DIRMINA-1069
> Project: MINA
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.0.3, 2.0.16
> Environment: Linux version 2.6.32-431.el6.x86_64(CentOS 65)
> Java 1.7.0_75
> Reporter: Wenzhi Wu
> Priority: Critical
> Attachments: After connecting to server successfully.PNG, Before
> connecting to server.PNG, File descriptors.PNG
>
>
> When connecting to server with NioSocketConnector,number of pipe and
> eventpoll goes up about 30.When I connect 1000 times,it will consume more
> file handles,finally exceed linux maximum limits.I think,maybe it is worser.
> Before connecting to server,number of file descriptors is 269.After it,it
> becomes 301.
> So,how did everybody solve it?
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