Re: Empty, unkillable processes

From: Green, Simon (SGreen@KRAFTEUROPE.COM)
Date: Fri Aug 02 2002 - 11:48:10 EDT


It might be worth looking for child processes.
e.g. ps -ef|grep [1]77948
These might prevent you from killing the parent task.

I don't use top, so I can't comment on your other question. I've never
noticed anything like that with topas, though.

Simon Green
Philip Morris ITSC Europe

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-----Original Message-----
From: Keith Reed [mailto:aixl@MAILMGR.COM]
Sent: 02 August 2002 16:32
To: aix-l@Princeton.EDU
Subject: Empty, unkillable processes

Looking into a user complaint on an AIX 4.3.3, I saw about 170 processes
that looked like this from a ps -ef command:
12:03AM up 18 days, 56 mins, 5 users, load average: 3.24, 3.39, 3.67
   dmcpu 177948 1 1 Dec 31 - 0:00 []
   dmcpu 178332 1 1 Dec 31 - 0:00 []
   dmcpu 178670 1 0 Dec 31 - 0:00 []
   dmcpu 178830 1 0 Dec 31 - 0:00 []
   dmcpu 179058 1 1 Dec 31 - 0:00 []
   dmcpu 179382 1 0 Dec 31 - 0:00 []
   dmcpu 179704 1 0 Dec 31 - 0:00 []
   dmcpu 179952 1 0 Dec 31 - 0:00 []
   dmcpu 180042 1 0 Dec 31 - 0:00 []
   dmcpu 180354 1 0 Dec 31 - 0:00 []
   dmcpu 180878 1 1 Dec 31 - 0:00 []
   dmcpu 181578 1 0 Dec 31 - 0:00 []
   dmcpu 182598 1 1 Dec 31 - 0:00 []
   dmcpu 182928 1 0 Dec 31 - 0:00 []
   dmcpu 183084 1 0 Dec 31 - 0:00 []
The processes could not be removed with a kill -9.
It took a reboot to remove them.
Now, today, on another 4.3.3 box, when I run top I see the following only
until the first refresh of the processes from top:
     0 root 0 -20 20k 24k non 3:59 33.2/ 0.1
     0 root 0 -20 20k 24k non 3:59 33.2/ 0.1
     0 root 0 -20 20k 24k non 3:59 33.2/ 0.1
After top refreshes that first time, I never see them again.
Has anyone seen either of these before? Any theories?



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