Hi unix lovers,
i have question about defunt process on HP-UX. Are there any side-effects of defunct process?
Can a parent process get killed because there are lot of defunct processes? say 50 defunct childs??
-Ashish (1 Reply)
Hi!
I'm newbi in the Unix. I've a C++ Program from where one shell gets executed. Sample C++ code is --
transactionID = 1199;
case 1199:
//*************************************************
// Received the suspend signal.... (2 Replies)
Hi,
Can any one help me to get rid of defunct process on UNIX IBM AIX box. These processes started when the system was rebooted almost after 1 1/2 years. Once one defunct process is created then all the user ids get infected and in turn creates numerous defunct processes. We have tried... (6 Replies)
My system is running solaris zones and oracle dbs in all the zones .. and now i find more then 4500 defunct processes in ps output. Can anyone know about this how to kill these
# ps -ef | grep defunct | wc -l
4899
And when i do ptree on one of the pid it shows most of the defunct... (3 Replies)
All,
I am getting a wired scenario, Not all times but some times i am getting the defunct process for a program. If i rerun the same program it is working fine.This defunct scenario is not occuring often. And this is happening only for the one program in my system that to sometimes
Can you... (1 Reply)
Hi,
I tried to kill the defunct process but it didn't work.
I don't want to make a mistake because some people are working on the server. I don't know if they might have troubles without dtlogin.
I would like stop/start dtlogin to stop the defunct process
Do you think that works?... (6 Replies)
I'd like to remove this defunct processes without rebooting. Or, I could remove this defuncts when the maximum allowable process is nearly reached, then send an email to the user/team. How can I determine the maximum allowable process that a server can handle? Any thoughts?
Jin@PRODUCTION: >... (3 Replies)
Hi everyone,
I'm working on continous integration with Jenkins.
I’m facing an issue while connecting a slave (solaris sparc 8) with Jenkins ver. 1.532.2
This slave is connected via the option “Launch slave via execution of command on the Master”.
Connection is established with:
-... (1 Reply)
Discussion started by: javaPIC
1 Replies
LEARN ABOUT V7
preap
preap(1) User Commands preap(1)NAME
preap - force a defunct process to be reaped by its parent
SYNOPSIS
preap [-F] pid...
DESCRIPTION
A defunct (or zombie) process is one whose exit status has yet to be reaped by its parent. The exit status is reaped via the wait(3C),
waitid(2), or waitpid(3C) system call. In the normal course of system operation, zombies may occur, but are typically short-lived. This may
happen if a parent exits without having reaped the exit status of some or all of its children. In that case, those children are reparented
to PID 1. See init(1M), which periodically reaps such processes.
An irresponsible parent process may not exit for a very long time and thus leave zombies on the system. Since the operating system destroys
nearly all components of a process before it becomes defunct, such defunct processes do not normally impact system operation. However, they
do consume a small amount of system memory.
preap forces the parent of the process specified by pid to waitid(3C) for pid, if pid represents a defunct process.
preap will attempt to prevent the administrator from unwisely reaping a child process which might soon be reaped by the parent, if:
o The process is a child of init(1M).
o The parent process is stopped and might wait on the child when it is again allowed to run.
o The process has been defunct for less than one minute.
OPTIONS
The following option is supported:
-F Forces the parent to reap the child, overriding safety checks.
OPERANDS
The following operand is supported:
pid Process ID list.
EXIT STATUS
The following exit values are returned by preap, which prints the exit status of each target process reaped:
0 Successfully operation.
non-zero Failure, such as no such process, permission denied, or invalid option.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWesu (32-bit) |
+-----------------------------+-----------------------------+
| |SUNWesxu (64-bit) |
+-----------------------------+-----------------------------+
SEE ALSO proc(1), init(1M), waitid(2), wait(3C), waitpid(3C), proc(4), attributes(5)WARNINGS
preap should be applied sparingly and only in situations in which the administrator or developer has confirmed that defunct processes will
not be reaped by the parent process. Otherwise, applying preap may damage the parent process in unpredictable ways.
SunOS 5.10 26 Mar 2001 preap(1)