Re: how to kill zombies

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On Thursday 25 April 2024 22:37:44 deloptes via tde-users wrote:
> William Morder via tde-users wrote:
> > That is just a kind of "ghost" (so to speak), traces of a process that is
> > no longer actually running.
>
> In my case the parent firefox process was still running. The child process
> was killed because of "high quality" developers of web pages are producing
> such content that overloads the system and oom killer kicks in. The stupid
> thing is, it causes the PC to consume also more power untill it decides to
> die or be killed.
>

In my own case, recent developments have provided some new information. Last 
night I went to sleep and forgot to take the machine offline, and in the 
morning, I found that I had been disconnected. Internet here has again been 
iffy, off and on, but sometimes I get knocked offline for unknown reasons. 

Now that I think about it, when I do have crowds of zombies, it usually seems 
to happen when I have gone offline, or been knocked offline, rather than 
shutting down certain internet programs, notably tor and privoxy. (I use 
tork-trinity to manage my proxies.) 

I had to restart my proxy, then I used iwconfig and ifconfig to restart my 
connection. I noticed that top showed 17 zombies. 

So I said, let's see. As one can see from the output below, most of these 
zombies are indeed root processes named w, whatever that means here. 

No (if readers are wondering), I have not yet tried to trace these PIDs to 
discover exactly what are these processes; but at least I know that those 
mysterious w processes indeed often are the zombies, and that they are owned 
by root. 

Bill


ps auxwww | grep 'Z'

USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root           1107  0.0  0.0      0     0 ?        Z    Apr23   1:43 [w] 
<defunct>
root           2471  0.0  0.0      0     0 ?        Z    Apr23   2:01 [w] 
<defunct>
<user>     3782  0.0  0.0      0     0 ?        Z    Apr21   0:00 [sh] 
<defunct>
root          4779  0.0  0.0      0     0 ?        Z    Apr21   3:25 [w] 
<defunct>
root          4863  0.0  0.0      0     0 ?        Z    Apr23   1:36 [w] 
<defunct>
root          8831  0.0  0.0      0     0 ?        Z    Apr24   1:00 [w] 
<defunct>
root        10333  0.0  0.0      0     0 ?        Z    Apr24   1:30 [w] 
<defunct>
root        10486  0.0  0.0      0     0 ?        Z    Apr22   2:56 [w] 
<defunct>
root        11969  0.0  0.0      0     0 ?        Z    Apr24   1:10 [w] 
<defunct>
root        15604  0.0  0.0      0     0 ?        Z    Apr24   0:59 [w] 
<defunct>
root        16754  0.0  0.0      0     0 ?        Z    Apr22   2:22 [w] 
<defunct>
root        17309  0.0  0.0      0     0 ?        Z    Apr22   2:14 [w] 
<defunct>
root        21189  0.0  0.0      0     0 ?        Z    Apr24   1:03 [w] 
<defunct>
root        21852  0.0  0.0      0     0 ?        Z    Apr22   2:50 [w] 
<defunct>
root        23849  0.0  0.0      0     0 ?        Z    Apr23   2:13 [w] 
<defunct>
<user>  27727  0.0  0.0 1606224  928 ?        Ssl  Apr23   0:20 
clamd -c /home/<user>/klammailkIZTym
root        29096  0.0  0.0      0     0 ?        Z    Apr21   3:22 [w] 
<defunct>
root        32585  0.0  0.0      0     0 ?        Z    Apr25   0:35 [w] 
<defunct>


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