[ndnSIM] Question about OutData metric

[Junxiao Shi]

Hi Muktadir

If every Interest is satisfied and there's no packet loss,

   - OutInterests should equal InData.
   - OutData should equal InInterests.

There's no direct relation between OutInterests and OutData.

Yours, Junxiao


On Fri, Sep 27, 2019 at 3:45 PM Muktadir R Chowdhury (mrchwdhr) <
mrchwdhr at memphis.edu> wrote:

> Hi,
>
>
>
>
>
> * I have a 3x3 grid topology, where node#0 is consumer and node#8 is
> producer.  6 --- 7 ---- 8  |      |        | 3 --- 4 ---- 5  |      |
>   | 0 --- 1 ---- 2 Node#0 is sending two interest and getting data back. I
> have installed L3RateTracer in the nodes. Below is the the OutInterests and
> OutData stat from the trace file: vagrant @ /vagrant/ndnSIM - ()  $ head -1
> 9-static-grid-clf-rate-trace.txt  Time    Node    FaceId  FaceDescr
> Type    Packets Kilobytes       PacketRaw       KilobytesRaw vagrant @
> /vagrant/ndnSIM - ()  $ awk '{if($3==257) print $N}'
> 9-static-grid-broadcast-rate-trace.txt | grep -w OutInterests 4       0
>   257     netdev://[00:00:00:00:00:01]    OutInterests    0.4     0.0179688
>       2       0.0898438 4       1       257
> netdev://[00:00:00:00:00:02]    OutInterests    0.4     0.0179688       2
>     0.0898438 4       2       257     netdev://[00:00:00:00:00:03]
> OutInterests    0.4     0.0179688       2       0.0898438 4       3
> 257     netdev://[00:00:00:00:00:04]    OutInterests    0.4     0.0179688
>     2       0.0898438 4       4       257     netdev://[00:00:00:00:00:05]
>   OutInterests    0.4     0.0179688       2       0.0898438 4       5
> 257     netdev://[00:00:00:00:00:06]    OutInterests    0.4     0.0179688
>     2       0.0898438 4       6       257     netdev://[00:00:00:00:00:07]
>   OutInterests    0.4     0.0179688       2       0.0898438 4       7
> 257     netdev://[00:00:00:00:00:08]    OutInterests    0.4     0.0179688
>     2       0.0898438 4       8       257     netdev://[00:00:00:00:00:09]
>   OutInterests    0       0       0       0 vagrant @ /vagrant/ndnSIM - ()
> $ awk '{if($3==257) print $N}' 9-static-grid-broadcast-rate-trace.txt |
> grep -w OutData 4       0       257     netdev://[00:00:00:00:00:01]
> OutData 1.2     1.46133 6       7.30664 4       1       257
> netdev://[00:00:00:00:00:02]    OutData 1.2     1.46133 6       7.30664 4
>     2       257     netdev://[00:00:00:00:00:03]    OutData 1.4     1.70488
> 7       8.52441 4       3       257     netdev://[00:00:00:00:00:04]
> OutData 1.4     1.70488 7       8.52441 4       4       257
> netdev://[00:00:00:00:00:05]    OutData 1.2     1.46133 6       7.30664 4
>     5       257     netdev://[00:00:00:00:00:06]    OutData 1.4     1.70488
> 7       8.52441 4       6       257     netdev://[00:00:00:00:00:07]
> OutData 1.2     1.46133 6       7.30664 4       7       257
> netdev://[00:00:00:00:00:08]    OutData 1.2     1.46133 6       7.30664 4
>     8       257     netdev://[00:00:00:00:00:09]    OutData 2.6     3.16621
> 13      15.8311 Each node is sending two interests which they are supposed
> to do. But my question is why each node is sending more than two data
> packets. I was assuming data count should be less or equal to interest
> count. Can someone please clarify the stat for the outgoing data is being
> collected?*
>
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