[Click] Record queue length overtime

[Cliff Frey]

You can easily do that with a Script element... you could use either 'read'
or 'print' to display the data.

If you wanted even more control, you could add a ControlSocket to your
config and then write a script that would access the ControlSocket.

Here is an example script element that should do what you want.

Cliff

Script(wait 1.0, read ct.length, loop);

On Sun, Mar 7, 2010 at 10:12 PM, Jimmy <fanyang.scu at gmail.com> wrote:

> Hello all,
>
> Using handlers, I know how to record the total queue length.
>
> -> ct :: Queue(50)
>
> -> TimedUnqueue(1)
>
> -> ccl :: Counter
>
> -> Print(TIMESTAMP true)
>
> -> Discard;
>
> DriverManager(pause,
> print >>log cnt.count,
> print >>log ct.length,
> print >>log ccl.count)
>
> Here, -> Print(TIMESTAMP true)  command can print received packets
> overtime on screen, I mean it can show when each packet is received.
>
> But in DriverManager, I can only record the number of packets I
> received when I stop this program.
>
> How can I record the overtime information of received packets or the
> number of packets in the queue? I mean is it possible to record the
> number of packets in the queue for every second?
>
> Another question is that are there any source elements relating to an
> exponential or poisson packets source (thus the arrival rate of
> packets is exponential or poisson distributed).
>
> Thank you very much for your help!
>
> --
> Best Regards,
>
> Jimmy
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