今天网站出现了下面的
错误:
java.net.SocketException: Too
many open
files
at java.net.PlainSocketImpl.
socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
at java.net.ServerSocket.implAccept(ServerSocket.java:450)
at java.net.ServerSocket.accept(ServerSocket.java:421)
at org.apache.jk.common.ChannelSocket.accept(ChannelSocket.java:293)
at org.apache.jk.common.ChannelSocket.acceptConnections(ChannelSocket.java:647)
at org.apache.jk.common.ChannelSocket$SocketAcceptor.runIt(ChannelSocket.java:857)
at org.apache.tomcat.util.
threads.ThreadPool$Control
Runnable.run(ThreadPool.java:682)
at java.lang.Thread.run(Thread.java:595)
cat /proc/[PID]/limits
发现这个glassfish 最大允许打开的文件才有1024个
Limit Soft Limit Hard Limit Units
Max cpu time unlimited unlimited ms
Max file size unlimited unlimited bytes
Max data size unlimited unlimited bytes
Max stack size 8388608 unlimited bytes
Max core file size 0 unlimited bytes
Max resident set unlimited unlimited bytes
Max processes unlimited unlimited processes
Max open files 1024 1024 files
Max locked memory 65536 65536 bytes
Max address space unlimited unlimited bytes
Max file locks unlimited unlimited locks
Max pending signals 16382 16382 signals
Max msgqueue size 819200 819200 bytes
Max nice priority 20 20
Max realtime priority 0 0
Max realtime timeout unlimited unlimited us
使用 lsof -p [PID]命令看这个进程打开的文件列表。
可惜当时没有看都打开了哪些文件。
明天让网管将open files 增大4倍。应该就不会有问题了