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POHow to configure keep-alive timeout in playframework 2
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copied!<p>I use playframework 2.0 in production and I see a rapidly growing number of files open by the corresponding java process. I changed the default allowed number of open files for a process from 1024 to 4096, but this just delays a problem and after some time the number of open files becomes so big, that the server slows down and sometimes even a <code>java.net.SocketException</code> "too many open files" appears in a log.</p> <p>I use ubuntu server 12.04, sun jdk 1.7.0_09.</p> <p><code>lsof</code> command demonstrates that almost all of open files are sockets created for user connections, so I make a conclusion that the Netty server that is used by playframework keeps alive a lot of open connections. As far as I understand I should change the keep-alive behaviour of the Netty server, for example, to set a low keep-alive timeout. How can I configure this in playframework 2.0? Or may be the problem is in something else? I can provide any configuration if needed.</p> <p><strong>UPD:</strong> here is a bit of output of <code>lsof -aPn -p 12251</code>. I censored some parts of ips with <code>***</code></p> <pre><code>COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME java 12251 root 324u IPv6 279502 0t0 TCP 10.127.0.***:80->***.***.65.137:51506 (ESTABLISHED) java 12251 root 325u IPv6 286749 0t0 TCP 10.127.0.***:80->***.***.18.121:1624 (ESTABLISHED) java 12251 root 327u IPv6 287220 0t0 TCP 10.127.0.***:80->***.***.126.210:49244 (ESTABLISHED) java 12251 root 330u IPv6 279289 0t0 TCP 10.127.0.***:80->***.***.65.155:12444 (ESTABLISHED) java 12251 root 331u IPv6 285609 0t0 TCP 10.127.0.***:80->***.***.33.233:2552 (ESTABLISHED) java 12251 root 332u IPv6 285610 0t0 TCP 10.127.0.***:80->***.***.33.233:2554 (ESTABLISHED) java 12251 root 333u IPv6 287236 0t0 TCP 10.127.0.***:80->***.***.90.20:16040 (ESTABLISHED) java 12251 root 334u IPv6 284047 0t0 TCP 10.127.0.***:80->***.***.195.2:1175 (ESTABLISHED) java 12251 root 335u IPv6 279357 0t0 TCP 10.127.0.***:80->***.***.65.137:51273 (ESTABLISHED) java 12251 root 336u IPv6 279988 0t0 TCP 10.127.0.***:80->***.***.65.137:51287 (ESTABLISHED) </code></pre>

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