[ndnSIM] [EXT] How to enable Cache hits and misses tracing in ndnSIM 2.8

[Junxiao Shi]

Hi Hussein

ndnSIM 2.8 removed legacy Content Store, according to release notes.
https://ndnsim.net/2.8/RELEASE_NOTES.html#release-2-8

CsTracer is not hooked up to NFD Content Store, so that it will always
print blank logs.
https://github.com/named-data-ndnSIM/ndnSIM/blob/28da73c868ad7444dba7a754fb77a41f6ca7cb07/utils/tracers/ndn-cs-tracer.cpp#L202

Yours, Junxiao

On Wed, Apr 21, 2021 at 23:22 Hussein AlOmaisi via ndnSIM <
ndnsim at lists.cs.ucla.edu> wrote:

> *External Email*
> Hi,
>
> I have this scenario:
>
> A (consumer)    ------     B(router)    --------  C(router)    -------    D
> (consuemr) ------  E (producer)
>
> both consumer nodes (A & D) start at the same time. I expected according
> to NDN's basic forwarding mechanism that consumer (A) can get a response
> for its request from the cache of consumer (D) which is at (3) hop counts
> from consumer (A). However, the consumer (A) gets responses from the
> producer (D) not from the cache of consumer (D). How to enable caching and
> serving requests from caches in the intermediate node if not enabled by
> default?
>
> One more point, using *ndn-cxx.nfd.Forwarder* log component I can see the
> consumer (D) go through *Forwarder::onContentStoreHit()* and the value of* m_counters.nCsHits
> *counter increases. However, the *CS Tracer* does not show that.
> How I can enable CS tracer in ndnSIM 2.8 to show the number of cache hits
> and misses. it currently shows me a text file with all CacheHits and
> CacheMisses are Zeroes. For example:
> *Time Node Type             Packets*
> 1             0         CacheHits     0
> 1             0         CacheMisses    0
> 1             1         CacheHits     0
> 1             1         CacheMisses    0
> 1             2         CacheHits     0
> 1             2         CacheMisses    0
> ...
>
> I appreciate your assistance.
>
> regards,
>
> Hussein
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.lists.cs.ucla.edu/pipermail/ndnsim/attachments/20210422/a1f2af95/attachment.html>