Okay, I'm working within ansi C and Sun Solaris 7. I have a problem with zombies. I'm currently using the kill command to return the status of a process. How do I check for Zombie PIDs or the right function to return its PID from within a C program? (1 Reply)
Hi All
I need help, how can i kill zombies instead of rebooting the system.
Regards
System: sna Tue Apr 5 17:50:23 2005
Load averages: 0.05, 0.15, 0.22
168 processes: 157 sleeping, 5 running, 6 zombies
Cpu states:
CPU LOAD USER NICE... (5 Replies)
i'm writing small http proxy server (accept client -> connect to remote proxy server -> recv client's request -> send to remote proxy server -> get responce from remote proxy server -> send answer to client -> close connection to client and to remote proxy server) and having problems with fork().... (2 Replies)
I had a problem deleting a zombie process. It refused to be killed.
I even tried kill -9 process# but it refused.
Any other way of killing it? (7 Replies)
what are the precautions to be taken care for avoiding zombie process ? (8 Replies)
Discussion started by: Gopi Krishna P
8 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