[cod] start/stop script

[escapedturkey]

I never ran into "data corruption" killing game server process(es) with 
kill -9 -1. There are plenty of times where you may need to do an 
entirely clean wipe of all processes per user account. kill -9 -1 (with 
an an empty crontab file) is the most efficient way to do it.

Christian Gerbrandt wrote:
> So maybe some zombie processes are much worse than data corruption ?!?
> If the process doesn't get killed by a normal kill, and you need to use a
> 'kill -9', then it is most likely already stuck in kernel memory,
> and you have more of a system problem than just some zombie processes. 
> 
> -----Original Message-----
> From: escapedturkey [mailto:escapedturkey at escapedturkey.com] 
> Sent: 13 December 2009 16:27
> To: Call of Duty server admin list.
> Subject: Re: [cod] start/stop script
> 
> I still think it's too risky to allow a process to possibly kill itself
> rather than just terminate it via kill -9 -1. Duplicate processes are much
> worse. :)
> 
> Christian Gerbrandt wrote:
>> 'kill -9' should be the last resort.
>> You are sending a SIGKILL to the process id, which will prevent any 
>> cleanup operations from the process.
>> All in-kernel operations are killed, which could lead to data corruption.
>> You should only use 'kill -9' if no other kill signal has been
> successfull.
>> -----Original Message-----
>> From: escapedturkey [mailto:escapedturkey at escapedturkey.com]
>> Sent: 13 December 2009 13:08
>> To: Call of Duty server admin list.
>> Subject: Re: [cod] start/stop script
>>
>>  From my understanding -9 makes sure the process is killed vs. just 
>> hanging around. If you allow the process to kill itself cleanly, it 
>> may just hang and you can end up with multiple dead processes -- that is
> my experience.
>> Jarkko Mäntylä wrote:
>>> On 10.12.2009 08:36, escapedturkey wrote:
>>>> Which ideas? The kill -9 -1?
>>>>
>>>> If he's running the game server as a user (in usermin) the kill -9 
>>>> -1 is perfect for clean-up, otherwise you'll have multiple processes 
>>>> running every-time you start the game server. Did I miss something?
>>>>
>>>> Also, the original poster of this thread and I know each other. :)
>>>>
>>> Using SIGKILL (-9) prevents any process to do any clean-up, you only 
>>> use it with broken programs. If the user is only running gameservers 
>>> that all need to be stopped at the same time then using -1 group 
>>> might be good idea.
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