05-12-2009
Abnormal behaviour of Defunct processes.
Hi All,
Sorry to bother you all if my query is silly. Can you please clarify my doubts on defunct processes.
Actually coming to the scenario, i have a server which is under cluster environment. Server B is having problems with the defunct process. There was a cron scheduled on Server B which runs in a particular time on everyday and it runs only once in a day. The script calls some more scripts to collect system info executing comman OS level commands like prstat,sar etc... This scripts will be called via a specific port. When the scripts starts executing, normally 10-11 defunct processes will be created and will dissappear if the script complets its execution. But from couple of weeks its being sick to see that the defuncts created were creaping upto 1000+.
Also, a point of note: The defuncts will never appear on weekends i.e. saturday and sunday, even though scripts execute.
To ensure that the scripts are working fine, i went round the Server A and checked the scripts. I found no difference with them.
May i know why this is happening to Server B. Is there any performance issues with Server B?
Can anyone post in their ideas!!! what else i can check to solve this problem?
Many thanks in advance.
Cheers,
Sai
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
When I ps -ef I see about 3 or 4 <DEFUNCT> things - what are these, and what causes them? Are they a concern? How can I fix them?
Thanks,
Michael (4 Replies)
Discussion started by: cuppjr
4 Replies
2. Solaris
mqm 17700 16815 0 0:00 <defunct>
kill -9 does not work, even as root (10 Replies)
Discussion started by: csaunders
10 Replies
3. UNIX for Dummies Questions & Answers
Hey guys/gals. I am new to the site and fairly new to Unix/Linux. I have a master netbackup server (solaris) that I get pinged on occasionally regarding defunct processes. (Usually over 50 or so of them.) I know what a defunct process is, but what is it a product of? Just plain sloppy code? (From... (1 Reply)
Discussion started by: EMCSANMAN
1 Replies
4. AIX
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)
Discussion started by: trokia88
6 Replies
5. UNIX for Advanced & Expert Users
Hi,
I am facing problems with defunct processes. The problem is, the defuncts are being created and getting dissappeared by themselves.
I have a process that calls some scripts through a specified port, when this scripts starts executing, the defuncts also started to appear(lots and lots, will... (1 Reply)
Discussion started by: reddybs
1 Replies
6. HP-UX
Dear Sir / Madam,
We have two socket programs which are running in background. These two socket programs are creating defunct processes in HP-UX which were not happening in Compaq True64 UNIX. What is the root cause of these defunct processes and how can we correct it?
Your suggestion will be... (3 Replies)
Discussion started by: kcsahoo
3 Replies
7. UNIX for Advanced & Expert Users
HiI had a tool fail recently, on analysis I found it was cleaning up orphaned directories that had been created by specific processes that had died for some reason, thus failing to clean up after themselves.The directories were of the form /dir.pid. The tool would look to see if any instances of... (2 Replies)
Discussion started by: steadyonabix
2 Replies
8. Solaris
hi all,
I'm working Solaris 5.10 (5.10 Generic_137137-09 sun4u sparc SUNW,SPARC-E nterprise)
Few days ago, my junior engineer made a mistake! He is execute shutdown command on the live server. He mis understand between live and test servers! :wall:
The live... (0 Replies)
Discussion started by: buyantugs
0 Replies
9. HP-UX
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)
Discussion started by: Jin_
3 Replies
10. HP-UX
How to find out and clear the 'defunct' processes at OS and DB level ..?? (6 Replies)
Discussion started by: SurajR
6 Replies
LEARN ABOUT OSF1
uudemon.cleanu
uudemon(4) Kernel Interfaces Manual uudemon(4)
NAME
uudemon.admin, uudemon.cleanu, uudemon.hour, uudemon.poll - Administrative shell scripts for polling remote systems, cleaning up spool
directories, reporting status to the system administrator, and routine invocations of the uuxqt and uusched daemons
SYNOPSIS
These shell scripts reside in the following directory:
/usr/lib/uucp
DESCRIPTION
All the scripts can be run from the command line or can be run automatically by the cron daemon. To automatically run the scripts, remove
the comment character (#) from the beginning of the relevant line in the /var/spool/cron/crontabs/uucp file.
This script reports status to the system administrator. It issues the uustat command to find out the status of uucp jobs. It mails the
results to the uucp login ID. The script may be modified to send mail to any login ID such as the uucp administrative login ID (uucpa) or
root. This script cleans up the /var/spool/uucp and /var/spool/uucppublic directories by running the uucleanup command. The uucleanup com-
mand is run with the following parameters: -C7, -D7, X2, -o2, -W1. This script runs the uusched and uuxqt daemons in the background. This
script polls the systems listed in the /usr/lib/uucp/Poll file. The uudemon.poll script should be scheduled before the uudemon.hour
script. This allows uudemon.poll to create any command files before cron runs the uudemon.hour script.
FILES
Contains the uudemon.admin, uudemon.cleanu, uudemon.hour and uudemon.poll files. Contains the uucp file.
RELATED INFORMATION
Commands: cron(8), uucleanup(8), uusched(8), uuxqt(1)
Files: /usr/lib/uucp delim off
uudemon(4)