如何解决playframework报OutOfMemoryError: PermGen space的问题？

Question

使用play 1.2.4创建的项目，之前部署在腾讯云上，运行很正常，最近却访问不了，检查日志，会有如下错误：

Oops: OutOfMemoryError
An unexpected error occured caused by exception OutOfMemoryError: PermGen space

play.exceptions.UnexpectedException: Unexpected Error
at play.Invoker$Invocation.onException(Invoker.java:244)
at play.Invoker$Invocation.run(Invoker.java:286)
at Invocation.HTTP Request(Play!)
Caused by: java.lang.OutOfMemoryError: PermGen space

然后我使用ps -ef grep查看进程信息，发现启动play的项目启动命名后面跟了一大堆的java包，这个是怎么回事呢？

root@VM-46-78-ubuntu:/XXX/XXXX/logs# ps -ef | grep XXXX
root      2989 25106  0 17:23 pts/1    00:00:00 grep XXXX
xiao     31139     1  0 Mar06 ?        02:04:31 java -javaagent:/XXXX/XXXX/playframework-1.2.4/framework/play-1.2.4.jar -XX:-UseSplitVerifier -Dfile.encoding=utf-8 -Xdebug -Xrunjdwp:transport=dt_socket,address=0,server=y,suspend=n -Dplay.debug=yes -classpath /home/xiao/www/MoreChat/conf:/home/xiao/local/playframework-1.2.4/framework/play-1.2.4.jar:/home/xiao/www/MoreChat/lib/commons-io-1.3.2.jar:/home/xiao/www/MoreChat/lib/mybatis-3.2.8.jar:/home/xiao/www/MoreChat/lib/fluent-hc-4.3.1.jar:/home/xiao/www/MoreChat/lib/httpclient-cache-4.3.1.jar:/home/xiao/www/MoreChat/lib/httpmime-4.3.1.jar:/home/xiao/www/MoreChat/lib/htrace-core-2.01.jar:/home/xiao/www/MoreChat/lib/httpclient-4.3.1.jar:

Answer 1

启动play时需要指定一下内存参数，查看一下发布后play项目的启动脚本，里面应该有关于启动参数的说明。play2.x的命令参数是：

play -mem 512