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Re: [RPRWG] Simulation results



Jon,

stqSize(0) in this graph is a lot smaller than the one that you sent earlier (simRes2.pdf). Is there a conversion problem here (byte vs bits etc)?

Another information that could be very valuable is how long is the priority inversion when we fix the stq size to the values given in the draft. A delay jitter histogram would be very useful. I am especially interested in jitter values exceeding 2 x 256 x MTU time.

Thanks.

Necdet

Jon Schuringa wrote:

 No problem, the new graphs are here: http://www.ikn.tuwien.ac.at/~nthuma/simRes3.pdf Jon
----- Original Message -----
Sent: Monday, April 28, 2003 10:00 AM
Subject: RE: [RPRWG] Simulation results
 Jon,Thanks for your interesting work. A couple of questions (if it is not too much..:):Do you have the values of the localFairRate for station 0 ? Can you make a graph that shows how this value changes with time for the aggressive and the conservative modes ?Leon
-----Original Message-----
From: Necdet Uzun [mailto:nuzun@xxxxxxxxx]
Sent: Friday, April 25, 2003 8:25 PM
To: Jon Schuringa
Cc: stds-802-17@xxxxxxxx
Subject: Re: [RPRWG] Simulation results
 
Jon,

Thank you for the good work. It seems like our formulas in Annex G is off quite a bit specially for conservative mode. Did you use the models from AT&T? If there is no modeling error, we need to find out the root cause of it and modify our formulas.

Thanks.

Necdet

Jon Schuringa wrote:

    Yes, it is better to change only one parameter at a time. New results with fixed 500km ring are here:http://www.ikn.tuwien.ac.at/~nthuma/simRes2.pdf Jon
----- Original Message -----
Sent: Friday, April 25, 2003 12:10 AM
Subject: Re: [RPRWG] Simulation results
 Jon,

Thank you for running these simulations. These are very valuable. The only think that is not clear to me from the result is whether the buffer requirement is linearly increased with number of nodes or with the size of the ring. Can you please run the same simulations for a fixed size ring say for 500km with varying number of nodes as in your graphs? After that we can determine whether the number of nodes affect the buffer requirements or not and based on that we can modify the formulas if necessary.

Thanks.

Necdet

Jon Schuringa wrote:

Dear all, I finished the simulations about the maximum stq buffer occupancy withfixed values for stqLowThreshold and stqHighThreshold andstqFullThreshold set to infinity, as Necdet proposed. You can get the results here:http://www.ikn.tuwien.ac.at/~nthuma/simRes.pdf  - Jon