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Check for long running process on AIX

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# 1  
Old 11-21-2013
Check for long running process on AIX
I want to write a shellscript which determines if a particular process is long running than my specified threshold time.

Code:
Eg:
My process name is "prsd" and is expected to run for 15 mins and completes. If I set a threshold limit of 1 hour,
and how we can the get output of the long running process "prsd" assuming it is running more than 2 hours.

Please help. Thanks in advance.
# 2  
Old 11-21-2013
You can rewrite prsd to flush its output buffers every x minutes, or to flush its output buffers and exit if it receives a certain signal. Then after having updated prsd you can write a shell script to get prsd's process id from ps command output and send that signal to the instance of prsd you want to kill.

There is no way, in general, to write a shell script that will reach into another process and force that process to write out what it was working on.
This User Gave Thanks to Don Cragun For This Post:
chandu123
# 3  
Old 11-21-2013
You could try something like this (don't have AIX available to test it), this will list PID of any prsd process running for more than 2 hours

Code:
ps -eo "comm pid etime" | awk '
BEGIN {split("1 60 3600 86400",M)}
/^prsd/{
    secs=0;
    for(s=v=split($3, T, "[:-]");v;v--)
        secs +=M[1+s-v]*T[v];
    if(secs > 3600*2) print "Process #" $2 " running for " secs " seconds"
}'

These 2 Users Gave Thanks to Chubler_XL For This Post:
chandu123 JSKOBS
# 4  
Old 11-21-2013
The ps command has an elapsed time option that shows how long a process has been running.

i.e.
Code:
ps -eo etime,user,pid,args | grep [p]rsd

The first column shows how long the process has been running.
This User Gave Thanks to in2nix4life For This Post:
chandu123
# 5  
Old 11-21-2013
Quote:
Originally Posted by in2nix4life
The ps command has an elapsed time option that shows how long a process has been running.

i.e.
Code:
ps -eo etime,user,pid,args | grep [p]rsd

The first column shows how long the process has been running.
Attention: [p] has a special meaning to the shell - must be quoted "[p]rsd"!
Otherwise there is not only the overhead that the shell searches the current work directory for matches. If it really finds a matching prsd it will replace the [p]rstd with it. And run into the race condition that grep can match itself in the ps output.
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