[ndnSIM] [EXT]Re: customise PIT size
shijunxiao at email.arizona.edu
Sat Jun 25 15:02:49 PDT 2022
ndnSIM uses NFD as its forwarding plane.
It does not support limiting PIT capacity.
To prevent crashing the simulation scenario, you should either reduce
sending rate or use a host machine with more RAM, so that you have enough
RAM for all the PIT entries.
NDN-DPDK is the only NDN forwarder that can limit PIT capacity, but it is
not possible to run NDN-DPDK within ns-3 or ndnSIM.
On Sat, Jun 25, 2022 at 4:40 PM Sai Gautam Mandapati <saigautam96 at gmail.com>
> *External Email*
> Hi Junxiao,
> Thank you for the explaination. I have one last question. If I want
> enforce PIT capacity limit is there anyway I can do that? Please let me
> know. Thanks once again.
> On Sun, 26 Jun 2022 at 12:39 am, Junxiao Shi <shijunxiao at email.arizona.edu>
>> Hi Sai
>> The forwarding plane in ndnSIM does not enforce PIT capacity limit.
>> Every unsatisfied Interest will stay in the PIT until InterestLifetime
>> has elapsed.
>> If the host machine has insufficient RAM to accommodate these PIT
>> entries, the simulation crashes.
>> If a forwarder is enforcing PIT capacity limit, having too many
>> unsatisfied Interests would either cause new Interests to be rejected or
>> cause old PIT entries to be evicted, depending on the design of the
>> forwarding plane.
>> Yours, Junxiao
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