[Nfd-dev] 1-to-Many NDN-RTC test and hub strategy

[Junxiao Shi]

Hi Peter

>From this face counters snapshot, I can see:
20695 Interests are forwarded to the producer (face 263), and 10558 Data
come back.
There are ten consumers. Face 271 receives 15872 Interests, and 9959 Data
are returned to this consumer. Other nine consumer faces only receive
around 1000 Interests, and between 50 and 200 Data are returned.

I'm unsure whether there's a problem in forwarding, or it's simply a
congestion.
The difference of incoming Interest counter of face 271 and other consumers
is most concerning.

Can you add the following:
(a) nfd-status -f | grep udp4://10.10.12.2:6363 output on consumers and
producer, along with nfd-status -fr output on HUB, captured at the same
time or after traffic stops. This would show whether there's packet loss
between end host and HUB.
(b) tcpdump trace (in .pcap format) captured on the HUB's 10.10.12.2 NIC.
This would capture the timing of packets, which allows us to analyze the
behavior of NFD.

Yours, Junxiao

On Fri, May 27, 2016 at 1:15 PM, Gusev, Peter <peter at remap.ucla.edu> wrote:

> hi Junxiao,
>
> here’s the output after running test for ~1min with default strategy:
>
> Faces:
>   faceid=1 remote=internal:// local=internal:// counters={in={0i 108d
> 69524B} out={106i 0d 14905B}} local permanent point-to-point
>   faceid=254 remote=contentstore:// local=contentstore:// counters={in={0i
> 0d 0B} out={0i 0d 0B}} local permanent point-to-point
>   faceid=255 remote=null:// local=null:// counters={in={0i 0d 0B} out={0i
> 0d 0B}} local permanent point-to-point
>   faceid=256 remote=udp4://224.0.23.170:56363 local=
> udp4://172.18.0.2:56363 counters={in={0i 0d 0B} out={0i 0d 0B}} non-local
> permanent multi-access
>   faceid=257 remote=udp4://224.0.23.170:56363 local=
> udp4://10.10.12.2:56363 counters={in={0i 0d 0B} out={0i 0d 0B}} non-local
> permanent multi-access
>   faceid=258 remote=ether://[01:00:5e:00:17:aa] local=dev://eth1
> counters={in={0i 0d 0B} out={0i 0d 0B}} non-local permanent multi-access
>   faceid=259 remote=ether://[01:00:5e:00:17:aa] local=dev://eth0
> counters={in={0i 0d 0B} out={0i 0d 0B}} non-local permanent multi-access
>   faceid=260 remote=fd://30 local=unix:///run/nfd.sock counters={in={61i
> 18d 23798B} out={18i 61d 35692B}} local on-demand point-to-point
>   faceid=263 remote=udp4://10.10.12.3:6363 local=udp4://10.10.12.2:6363
> counters={in={0i 10558d 13658680B} out={20695i 0d 2237198B}} non-local
> persistent point-to-point
>   faceid=265 remote=udp4://10.10.12.4:6363 local=udp4://10.10.12.2:6363
> counters={in={1099i 0d 116576B} out={0i 158d 294915B}} non-local persistent
> point-to-point
>   faceid=267 remote=udp4://10.10.12.6:6363 local=udp4://10.10.12.2:6363
> counters={in={1021i 0d 107913B} out={0i 73d 198077B}} non-local persistent
> point-to-point
>   faceid=269 remote=udp4://10.10.12.11:6363 local=udp4://10.10.12.2:6363
> counters={in={1009i 0d 106468B} out={0i 92d 220952B}} non-local persistent
> point-to-point
>   faceid=271 remote=udp4://10.10.12.5:6363 local=udp4://10.10.12.2:6363
> counters={in={15872i 0d 1727208B} out={0i 9959d 12671723B}} non-local
> persistent point-to-point
>   faceid=273 remote=udp4://10.10.12.7:6363 local=udp4://10.10.12.2:6363
> counters={in={1030i 0d 108867B} out={0i 126d 252633B}} non-local persistent
> point-to-point
>   faceid=275 remote=udp4://10.10.12.8:6363 local=udp4://10.10.12.2:6363
> counters={in={1009i 0d 106468B} out={0i 57d 178233B}} non-local persistent
> point-to-point
>   faceid=277 remote=udp4://10.10.12.13:6363 local=udp4://10.10.12.2:6363
> counters={in={988i 0d 104209B} out={0i 86d 213201B}} non-local persistent
> point-to-point
>   faceid=279 remote=udp4://10.10.12.12:6363 local=udp4://10.10.12.2:6363
> counters={in={1044i 0d 110239B} out={0i 76d 205552B}} non-local persistent
> point-to-point
>   faceid=281 remote=udp4://10.10.12.10:6363 local=udp4://10.10.12.2:6363
> counters={in={1049i 0d 110944B} out={0i 79d 207786B}} non-local persistent
> point-to-point
>   faceid=282 remote=udp4://10.10.12.9:6363 local=udp4://10.10.12.2:6363
> expires=523s counters={in={1143i 0d 121185B} out={0i 172d 316470B}}
> non-local on-demand point-to-point
>   faceid=290 remote=fd://42 local=unix:///run/nfd.sock counters={in={1i
> 0d 46B} out={0i 0d 0B}} local on-demand point-to-point
> RIB:
>   /localhost/nfd/rib route={faceid=260 (origin=0 cost=0 ChildInherit)}
>   /ndn/edu/ucla/remap/ndnrtc/user/client10 route={faceid=281 (origin=255
> cost=0 ChildInherit)}
>   /ndn/edu/ucla/remap/ndnrtc/user/client9 route={faceid=279 (origin=255
> cost=0 ChildInherit)}
>   /ndn/edu/ucla/remap/ndnrtc/user/client8 route={faceid=277 (origin=255
> cost=0 ChildInherit)}
>   /ndn/edu/ucla/remap/ndnrtc/user/client7 route={faceid=275 (origin=255
> cost=0 ChildInherit)}
>   /ndn/edu/ucla/remap/ndnrtc/user/client6 route={faceid=273 (origin=255
> cost=0 ChildInherit)}
>   /ndn/edu/ucla/remap/ndnrtc/user/client5 route={faceid=271 (origin=255
> cost=0 ChildInherit)}
>   /ndn/edu/ucla/remap/ndnrtc/user/client4 route={faceid=269 (origin=255
> cost=0 ChildInherit)}
>   /ndn/edu/ucla/remap/ndnrtc/user/client3 route={faceid=267 (origin=255
> cost=0 ChildInherit)}
>   /ndn/edu/ucla/remap/ndnrtc/user/client2 route={faceid=265 (origin=255
> cost=0 ChildInherit)}
>   /ndn/edu/ucla/remap/ndnrtc/user/client1 route={faceid=263 (origin=255
> cost=0 ChildInherit)}
>
>
> Thanks,
>
> --
> Peter Gusev
>
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