zombie-process Questions
3
I have some troubles with Python child processes so I wrote a very simple script:
import os
import sys
import time
pid = os.fork()
if pid:
#parent
time.sleep(30)
else:
#child
#os._exit(0)
sy...
Large asked 6/8, 2013 at 20:50
9
Solved
I launched my program in the foreground (a daemon program), and then I killed it with kill -9, but I get a zombie remaining and I m not able to kill it with kill -9. How to kill a zombie process?
...
Leucine asked 5/6, 2013 at 16:14
15
Solved
Is there a way to ensure all created subprocess are dead at exit time of a Python program? By subprocess I mean those created with subprocess.Popen().
If not, should I iterate over all of the issu...
Bruell asked 26/11, 2008 at 10:21
1
nvidia-smi screenshot
The process with PID 14420 is a zombie process and its parent id is 1(init). I want to clear 4436MiB memory occupied by this zombie process without rebooting.
How should I p...
Faina asked 7/11, 2016 at 17:1
9
Solved
A Zombie is created when a parent process does not use the wait system call after a child dies to read its exit status, and an orphan is child process that is reclaimed by init when the original pa...
Rabb asked 19/12, 2013 at 18:24
3
I have a Docker container that runs bash at PID1 which in turn runs a long-running (complex) service that sometimes produces zombie processes parented to the bash at PID1. These zombies are seeming...
Pleopod asked 4/5, 2016 at 8:42
1
Solved
Recently I'm studying dumb-init and if I realized correctly it's trying to:
runs as PID1, acting like a simple init system(reaping zombie processes)
signal proxy/forwarding (which bash doesn't do)...
Calliecalligraphy asked 1/3, 2021 at 14:4
2
I have written a simple C program in RedHat Linux which waits for a child process using waitpid after calling execv.
int main( int argc, char * argv[] )
{
int pid;
int status = 0;
int wait_ret;...
Heptagonal asked 25/5, 2018 at 19:7
2
Solved
I am interested in creating a zombie process. To my understanding, zombie process happens when the parent process exits before the children process. However, I tried to recreate the zombie process ...
Liturgist asked 7/8, 2014 at 0:28
4
Solved
I have this code that requires a parent to fork 3 children.
How do you know (and) where to put the "wait()" statement to kill
zombie processes?
What is the command to view zombie processes if yo...
Angara asked 11/2, 2015 at 15:2
2
Solved
I have just had a lecture that sums reaping as:
Reaping
Performed by parent on terminated child (using wait or waitpid)
Parent is given exit status information
Kernel then deletes zombie child p...
Nepotism asked 15/11, 2019 at 23:8
3
Solved
Is there a difference between zombie and defunct processes? I have found the wikipedia article where it is written that this two are the same. In that case why it is needed to have 2 different term...
Tack asked 26/12, 2017 at 10:44
1
Solved
When I tried to archiving the project directly using Xcode menu (Product - Archive), it works well. But when I tried to execute it from the Integration menu (bot), I got this error:
Build operat...
Jemappes asked 26/1, 2018 at 8:0
7
Solved
I was having a discussion with a teammate about locking in .NET. He's a really bright guy with an extensive background in both lower-level and higher-level programming, but his experience with lowe...
Stonewort asked 19/11, 2013 at 7:38
2
Solved
We are using a python process to manage long running python subprocesses. Subprocesses occasionally need to be killed. The kill command does not completely kill the process, only makes it defunct. ...
Niple asked 31/1, 2017 at 15:34
2
Solved
first thing first. my system info and versions:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 13.04
Release: 13.04
Codename: raring
$ sudo docker versi...
Holograph asked 14/3, 2014 at 19:0
2
Solved
I have an application in Go that reroutes the STDIN and STDOUT of binaries and then runs them. In a nutshell I'm doing:
- create command object with the binary path (lets call the object command A...
Demivolt asked 17/3, 2016 at 2:17
1
Context is this Redis issue. We have a wait3() call that waits for the AOF rewriting child to create the new AOF version on disk. When the child is done, the parent is notified via wait3() in order...
Xerophagy asked 30/11, 2015 at 8:46
2
Solved
I'm writing a small test that starts a daemon process and tests it e.g:
let server = Command::new("target/debug/server").spawn();
// do some tests
server.kill();
The typical way to fail a test...
Nathalie asked 29/5, 2015 at 19:52
1
Solved
This is basically a follow up to the this more specialized question. There have been some posts about the creation of zombie processes when doing parallel computing in R:
How to stop R from leavi...
Caressive asked 19/8, 2014 at 16:8
1
Solved
Here is a little reproducible example:
library(doMC)
library(doParallel)
registerDoMC(4)
timing <- system.time( fitall <- foreach(i=1:1000, .combine = "c") %dopar% {
print(i)
})
I start...
Toilsome asked 17/8, 2014 at 11:2
1
Solved
A Zombie process is a process that has completed execution, but still has an entry in the process table (the parent hasn't read its exit code, or in other words, it hasn't been "reaped").
An Orph...
Buxton asked 21/6, 2014 at 21:44
3
Solved
For a website, I need to be able to start and stop a daemon process. What I am currently doing is
exec("sudo /etc/init.d/daemonToStart start");
The daemon process is started, but Apache/PHP hang...
Endor asked 5/12, 2011 at 14:47
6
Solved
I have some processes showing up as <defunct> in top (and ps). I've boiled things down from the real scripts and programs.
In my crontab:
* * * * * /tmp/launcher.sh /tmp/tester.sh
The con...
Matthias asked 1/10, 2009 at 22:45
1
Solved
I have some python multiprocessing code with the parent process starting a bunch of child worker processes and then terminating them after awhile:
from multiprocessing import Process
nWorkers = 1...
Parget asked 6/1, 2014 at 22:45
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