linux - 杀死一个java僵尸进程

Question

我正在运行一个实验性 Java 应用程序，每次我终止或停止该应用程序时，都会创建僵尸进程。我知道僵尸并不是真正的问题，因为它们(据说)不会消耗资源。但是，我的 RAM 可用空间明显少于应有的空间。这是

的转储

ps aux | grep java

3052  8.5  0.0      0     0 ?        Zl   Sep24 127:24 [java] <defunct>
6644  0.9  0.0      0     0 ?        Zl   Sep24  13:20 [java] <defunct>
8325  0.7  0.0      0     0 ?        Zl   Sep24  11:01 [java] <defunct>
8954  0.7  0.0      0     0 ?        Zl   Sep24  11:01 [java] <defunct>
16229  1.3  0.0      0     0 ?        Zl   Sep24  16:57 [java] <defunct>
19222  106  0.0      0     0 ?        Zl   Sep24 1346:37 [java] <defunct>

以下均无效:(

kill -9 PID , kill -1 PID, kill -KILL PID 

我无法重启我的机器!所以我非常欢迎任何解决方案。

Answer 1

wait(2) 手册页告诉您:

A child that terminates, but has not been waited for becomes a "zombie". The kernel maintains a minimal set of information about the zombie process (PID, termination status, resource usage information) in order to allow the parent to later perform a wait to obtain information about the child. As long as a zombie is not removed from the system via a wait, it will consume a slot in the kernel process table, and if this table fills, it will not be possible to create further processes. If a parent process terminates, then its "zombie" children (if any) are adopted by init(8), which automatically performs a wait to remove the zombies.

所以你必须寻找你的僵尸的父进程ID并杀死它们。然后 init 将埋葬你的僵尸。为此，ps -f 或 pstree 将为您提供帮助。