Hi Carlo,
Is the build a stable one ?Check the steps for increasing the file descriptor 
sizeuse -buff_size  set value to 1024*n( where n = 1..n)can you on the call 
debug option as well
please check with all these options

Thanks

-Abinash 


> Date: Sun, 16 Feb 2014 20:08:02 -0600
> From: carlo.carr...@alcatel-lucent.com
> To: sipp-users@lists.sourceforge.net
> Subject: [Sipp-users] Cannot start a script with more than 1000 reg/sec
> 
> Hello,
> I'm running sipp v3.4.0-RTPSTREAM.
> I found that I am not able to start a registration script when the 
> registration rate is greater than 1000 reg/sec. I'm using options -r 
> 1047 -rp 1000.
> If the registration rate is less than or equal 1000, the script works 
> fine. Otherwise, it starts but does not generate any load.
> 
> Here is a screenshot for a working case:
> 
> ------------------------------ Scenario Screen -------- [1-9]: Change 
> Screen --
>    Call-rate(length)   Port   Total-time  Total-calls Remote-host
> 1000.0(0 ms)/1.000s   5500       6.00 s         5982 135.1.216.65:5060(UDP)
> 
>    998 new calls during 1.001 s period    0 ms scheduler resolution
>    0 calls (limit 3000)                   Peak was 5 calls, after 0 s
>    0 Running, 5983 Paused, 473 Woken up
>    0 dead call msg (discarded)            0 out-of-call msg (discarded)
>    3 open sockets
> 
>                                   Messages  Retrans Timeout   Unexpected-Msg
>      REGISTER ---------->         5982      0         0
>           200 <----------  E-RTD1 5982      0 0         0
> ------ [+|-|*|/]: Adjust rate ---- [q]: Soft exit ---- [p]: Pause 
> traffic -----
> 
> 
> And here is a screenshot for a non-working case:
> 
> ------------------------------ Scenario Screen -------- [1-9]: Change 
> Screen --
>    Call-rate(length)   Port   Total-time  Total-calls Remote-host
> 1047.0(0 ms)/1.000s   5500       2.00 s            0 135.1.216.65:5060(UDP)
> 
>    0 new calls during 1.002 s period      1 ms scheduler resolution
>    0 calls (limit 3141)                   Peak was 0 calls, after 0 s
>    0 Running, 2 Paused, 3 Woken up
>    0 dead call msg (discarded)            0 out-of-call msg (discarded)
>    3 open sockets
> 
>                                   Messages  Retrans Timeout   Unexpected-Msg
>      REGISTER ---------->         0         0         0
>           200 <----------  E-RTD1 0         0 0         0
> ------ [+|-|*|/]: Adjust rate ---- [q]: Soft exit ---- [p]: Pause 
> traffic -----
> 
> 
> Note that if I start the script with less than 1000 reg/sec and then I 
> increase them manually, everything works just fine.
> Here is a screen shot showing that:
> 
> ------------------------------ Scenario Screen -------- [1-9]: Change 
> Screen --
>    Call-rate(length)   Port   Total-time  Total-calls Remote-host
> 1030.0(0 ms)/1.000s   5500      10.01 s        10208 135.1.216.65:5060(UDP)
> 
>    1033 new calls during 1.002 s period   0 ms scheduler resolution
>    0 calls (limit 3090)                   Peak was 5 calls, after 2 s
>    0 Running, 10209 Paused, 481 Woken up
>    0 dead call msg (discarded)            0 out-of-call msg (discarded)
>    3 open sockets
> 
>                                   Messages  Retrans Timeout   Unexpected-Msg
>      REGISTER ---------->         10208     0         0
>           200 <----------  E-RTD1 10208     0 0         0
> ------ [+|-|*|/]: Adjust rate ---- [q]: Soft exit ---- [p]: Pause 
> traffic -----
> 
> 
> So, it seems that sipp is capable of handling a rate greater than 1000, 
> but not if starting the script with that value.
> 
> I need to start several scripts like this from a shell script, for lab 
> automation registration and call load testing. Is there a way to 
> overcome this limitation?
> 
> Thanks in advance for any help you can give,
> 
> Carlo
> 
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