[EMAIL PROTECTED] wrote:
> Vlad,
>  
> on defunct:
> -----------
> you're right, it's the way daemons and backgrounding is done, and 
> solves the "defunct" issue. So, the ideal bug fix.
>  
> I have some problems though with the final result we get, but those 
> are not breaking to use this solution now:
>  
> 1. to execute a (small) unix program, we will use "fork - fork - 
> system", that gives three process creations instead of one (but we 
> already had two in the code;-), it's certainly not optimal/efficient, 
> but computers are fast with a lot of resources these days.
>  
> 2. making an orphan of the final child process gives them ppid=1, 
> making tools like pstree and pkill fail to identify the correct child 
> processes. When running multiple instances of sipp (as I do), it might 
> give problems to handle all processes hanging around (cleanup when 
> things don't go like you expected).
Ok. Not an ideal situation, but better...
>  
> Olivier,
>  
> on IP impairments:
> -----------------
>  
> I noticed you proposing NISTNET as impairment generator on linux, but 
> if my info is correct, most people nowadays have switched to NETEM, 
> which is integrated in the standard linux kernel (you might have to 
> activate it when compiling). Netem is only one of the tools available 
> in a more general scheme, which also support chaining with packet 
> classifiers, queues and shapers. Very powerfull, I only used the basic 
> impairments until now (per direction drop, duplicate, delay/jitter).

Thanks! I didn't know about NETEM, I'll definitely have a look.
Would you like to add some info on the specific usage of NETEM in the 
context of SIP+RTP on SIPp's wiki? (http://sipp.sourceforge.net/wiki/)

-- 
Olivier
HP OpenCall Software
http://www.hp.com/go/opencall/


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