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Operating Systems HP-UX How to clear defunct processes?? Post 302754005 by methyl on Wednesday 9th of January 2013 11:53:39 PM
Old 01-10-2013
In HP-UX zombie processes which are waiting for a hardware resource will not die without a reboot.

Can you post an example process tree?
How many zombie processes do you have on a bad day? Do they ever disappear without a reboot?
What database engine are you using, and do you have a simple explanation for the zombie processes (like users disconnecting untidily)?
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PS(1)							      General Commands Manual							     PS(1)

NAME
ps - process status SYNOPSIS
ps [-alxU] [kernel mm fs] OPTIONS
-a Print all processes with controlling terminals -l Give long listing -x Include processes without a terminal EXAMPLES
ps -axl # Print all processes and tasks in long format DESCRIPTION
Ps prints the status of active processes. Normally only the caller's own processes are listed in short format (the PID, TTY, TIME and CMD fields as explained below). The long listing contains: F Kernel flags: 001: free slot 002: no memory map 004: sending; 010: receiving 020: inform on pending signals 040: pending signals 100: being traced. S State: R: runnable W: waiting (on a message) S: sleeping (i.e.,suspended on MM or FS) Z: zombie T: stopped UID, PID, PPID, PGRP The user, process, parent process and process group ID's. SZ Size of the process in kilobytes. RECV Process/task on which a receiving process is waiting or sleeping. TTY Controlling tty for the process. TIME Process' cumulative (user + system) execution time. CMD Command line arguments of the process. The files /dev/{mem,kmem} are used to read the system tables and command line arguments from. Terminal names in /dev are used to generate the mnemonic names in the TTY column, so ps is independent of terminal naming conventions. PS(1)
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