My daemon process is the child of init and init has the responsibility to remove it, once it turns zombie. But I want to ask why the daemon process which is child of init turns zombie in the first place. What measures I have to take to avoid this?
rish (1 Reply)
I have RHES4 machine with VRTSralus - Backup Exec agent installed there and running as a service. The agent hiccups sometimes and turns into defunct state. The problem is that I cannot kill it anyway., it stays there forever until the machine is rebooted. I wonder if anyone had such an experience... (1 Reply)
Hi
I need help because I don't know if it is possible to add a find inside a cat.
like I have a file with the pid of the process that use to became zombie. And I have the same pid stored in the var (pid1)
now, I have no clue how to check if the the find finds the pid or even if it's... (2 Replies)
dear friends,
in an interview they asked me what is zombie process. how we can identifying these process.if can you kill all zombie process. (8 Replies)
Is there an equivilant to the preap command in AIX that would allow me to get rid of a zombie process. I am new to AIX, moving over from Solaris and in the past I have been able to preap the pid on the defunct process to clean them up. I have looked around and the best I can see is that it may... (3 Replies)
Hello
I try to googled it , but I dint get sufficient answer :( ..
When I can see zombie running on server do they consume system resources or not ?
I have read that is not good to kill them with signal 9 cause it might cause more troubles .. why is kill -9 so harmfull?
thanks (2 Replies)
What is the overhead associated with zombie process?Is it running out of process-ID?:confused:
Since some information is stored in process table..
Thanks in Advance (4 Replies)
Discussion started by: jois
4 Replies
LEARN ABOUT NETBSD
proc_compare
PROC_COMPARE(3) BSD Library Functions Manual PROC_COMPARE(3)NAME
proc_compare -- compare two processes' interactivity
LIBRARY
System Utilities Library (libutil, -lutil)
SYNOPSIS
#include <sys/sysctl.h>
int
proc_compare(const struct kinfo_proc2 *p1, const struct kinfo_lwp *l1, const struct kinfo_proc2 *p2, const struct kinfo_lwp *l2);
DESCRIPTION
The proc_compare() function compares two processes that are on the same terminal for their interactivity. This means that the process
returned is the one that has a better chance being the active foreground process on that tty. This algorithm is used in the kernel for
SIGINFO reporting and in userland by w(1).
The algorithm used is as follows:
o If one of them is runnable, it is preferred.
o If both are runnable, the one with the largest CPU percent is preferred.
o In a CPU percent tie, the one started more recently wins.
o If none are runnable, and one of them is a zombie, the non-zombie is preferred
o If both are zombies, the one started more recently wins.
o If neither is a zombie, the one with the smaller sleep time wins.
o In a tie, and one is sleeping in non-interruptible sleep, prefer that one.
o If both are in the same state, the one started more recently is preferred.
In all cases where the most recently started wins, if there was no winner, the one with the largest PID wins.
RETURN VALUES
The proc_compare() function returns 0 if p1 is to be preferred and 1 if p2 is to be preferred.
SEE ALSO w(1)HISTORY
The proc_compare() was extracted from src/sys/kern/tty.c and src/usr.bin/w/proc_compare.c and merged in NetBSD 6.0.
BSD October 20, 2011 BSD