[jira] Closed: (DIRMINA-546) Reduce unnecessary system calls when a new session is created.

["Trustin Lee (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DIRMINA-546?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Trustin Lee closed DIRMINA-546.
-------------------------------

    Resolution: Fixed

The following test method:

    @Test
    public void mina() throws Exception {
        SocketAcceptor acceptor = new NioSocketAcceptor();
        acceptor.setHandler(new IoHandlerAdapter());
        acceptor.setDefaultLocalAddress(new InetSocketAddress(8080));
        acceptor.bind();
        
        long start = System.currentTimeMillis();
        for (int i = 0; i < 10000; i ++) {
            new Socket("127.0.0.1", 8080).close();
        }
        long end = System.currentTimeMillis();
        System.out.println(end - start);
    }

prints out the following result:

Before optimization - 38412
After optimization 11212

> Reduce unnecessary system calls when a new session is created.
> --------------------------------------------------------------
>
>                 Key: DIRMINA-546
>                 URL: https://issues.apache.org/jira/browse/DIRMINA-546
>             Project: MINA
>          Issue Type: Improvement
>          Components: Transport
>    Affects Versions: 2.0.0-M1
>            Reporter: Trustin Lee
>            Assignee: Trustin Lee
>             Fix For: 2.0.0-M2
>
>
> So far, MINA has been setting all socket parameters for every newly created socket.  It means MINA performs several unnecessary system calls.  For exaimple, Socket.setReceiveBufferSize() is always called even if a user didn't change the default value.

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