Defunct process


 
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Operating Systems Solaris Defunct process
# 1  
Old 05-07-2009
Defunct process

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 processes
originates from one parent thats an oracle db.

#ps -ef | grep defunct | more
adm_itss 11002 3868 0 - ? 0:00 <defunct>


#ptree 11002
3868 ora_psp0_soadb
11002 <defunct>
# 2  
Old 05-07-2009
defunct processes are already dead. you might want to reboot the machine or kill the PARENT process
http://unixsadm.blogspot.com/2007/12...cesses-on.html

if your system is not in production, i will suggest you to reboot

Last edited by DukeNuke2; 05-07-2009 at 10:05 AM..
# 3  
Old 05-07-2009
Thanx i was able to remove almost all defunct processes

#ps -ef | grep defunct | wc -l
2


But system is still responding slow .. do not know why .. though the mem and cpu stats are following

top
last pid: 8488; load avg: 0.09, 0.11, 0.11; up 58+18:40:39 06:37:36
381 processes: 378 sleeping, 1 zombie, 1 stopped, 1 on cpu
CPU states: 99.7% idle, 0.0% user, 0.3% kernel, 0.0% iowait, 0.0% swap
Memory: 64G phys mem, 41G free mem, 36G total swap, 35G free swap
# 4  
Old 05-07-2009
Can you do a reboot? There are many causes behind the scene as to why servers are slow. If it happens again, all of a sudden, its worth while investigating. Since this is the 1st time it happened, I will be a bit lenient on this. Since there are "things" being done in the system, we can assure whats the ROOT CAUSE for now

And also make sure that the /tmp space is not too full. This kind of symptom has ever occurred, and when the system goes low on swap space, it gets panic. Pls avoid this

Last edited by DukeNuke2; 05-07-2009 at 10:06 AM..
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