Archive for January, 2014

It all starts as a normal Monday. Last time you operated with your system, everything worked fine. And then you find it, a zombie lurking in your tasks.

$ top

top - 12:49:16 up 2:30, 6 users, load average: 0.18, 0.35, 0.42
Tasks: 195 total, 2 running, 190 sleeping, 2 stopped, 1 zombie

It is time to find the zombie process by running the following command in Terminal:

$ ps aux | grep Z

1001 6286      0.0     0.0       0       0 ?      Zs      12:10 0:00     [adb]

So. The Zombie is an adb command. It does not take any CPU or memory, but it blocks your adb from working at all. Killing it with $ kill -9 6286 does not help. $ killall -9 adb does not help either but still the Zombie adb blocks development. It is time to find adb’s parent process and go for it.
You can find the parent of the Zombie by running the following command in Terminal:

 $ pstree
pstree output

From the pstree you can see, that the parent of adb is java. So, time to prime your cannon and kill the parent process.

$ killall -9 java

After the parent process has been eliminated, the zombie process is also gone.

$ top

top - 13:04:18 up 2:45, 6 users, load average: 0.84, 0.79, 0.63
Tasks: 194 total, 1 running, 192 sleeping, 1 stopped, 0 zombie

And now, you can happily return to what ever development you were doing.

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