Date: Wed, 19 Jan 2005 15:52:22 +0900 From: Rob <spamrefuse@yahoo.com> Cc: freebsd-stable@freebsd.org Subject: Re: User's cron job creates zombie process on 5.3 Message-ID: <41EE03A6.7080404@yahoo.com> In-Reply-To: <20050119064822.GA65506@cirb503493.alcatel.com.au> References: <41EDA6FB.6000706@snu.ac.kr> <20050119064822.GA65506@cirb503493.alcatel.com.au>
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Peter Jeremy wrote:
> On Wed, 2005-Jan-19 09:16:59 +0900, Rob Lahaye wrote:
>
>> tunnel="-L 55110:localhost:110 pop3.univ.net"
>> tunnel_up=`pgrep -f -- "${tunnel}"`
>> [ "${tunnel_up}" = "" ] && /usr/bin/ssh -N -f ${tunnel}
>
>
>>It works beautifully, but why does this also generate one zombie process:
>>USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND
>>rob 655 0.0 0.0 0 0 ?? Z Sat02PM 0:00.01 <defunct>
>
> You get a zombie when a process has exited and the parent hasn't issued
> a wait(2) (or SIG_IGN'd SIGCHLD). Have a look at what the parent process
> is and that might give you an idea as to what is going wrong.
Sorry, can you tell me how to do this?
How can I find out what's the parent process of a Zombie process?
I have a user crontab, which calls a sh-shell script; so I have no
clue where to start investigating....
Thanks,
Rob.
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