On Thu, 4 May 2000 21:17:20 -0700 (PDT),
kdb development <kdblinux@pacbell.net> wrote:
>Alexander Viro wrote:
>> On Fri, 5 May 2000, Alan Cox wrote:
>> > We need to see zombies. Sysadmins depend on being able to see zombies to
>> > figure out why the process tree is full, and what blew up.
>> Precisely. The real question being: what stuff do we actually need to keep
>> so that we could see them?
> 1) process id
> - need to prevent reallocation
>
> 2) wait status (i.e. exit status, core flag, etc.)
> - needed for wait/waitpid/waitid/wait{3|4} etc.
>
> possibly
> 3) resource consumption (if timeu and times aren't
> folded into parent at exit())
Parent pid, command name. IBM made the *big* mistake of keeping only
the above fields on zombies under MVS Unix. So you could not tell
which command had gone zombie, nor could you tell which parent was
failing to reap its children. Very unhelpful.
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