[ndnSIM] No Cache Hits or Misses via ndnSim Example or anything else
Justin Rodrigues
justin99 at student.fdu.edu
Mon Jul 26 11:50:30 PDT 2021
Hello Everyone,
I hope you are doing well.
I am not sure why but when I run the example for cs-trace called ndn-tree-cs-tracers.cpp I get 0 cache hits and 0 misses is this normal in the cs-trace file? I need to understand how the hits or misses are accounted for I think something is wrong.
// ndn-tree-cs-tracers.cpp
#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/ndnSIM-module.h"
namespace ns3 {
int
main(int argc, char* argv[])
{
CommandLine cmd;
cmd.Parse(argc, argv);
AnnotatedTopologyReader topologyReader("", 1);
topologyReader.SetFileName("src/ndnSIM/examples/topologies/topo-tree.txt");
topologyReader.Read();
// Install NDN stack on all nodes
ndn::StackHelper ndnHelper;
ndnHelper.setPolicy("nfd::cs::lru");
ndnHelper.setCsSize(100);
ndnHelper.InstallAll();
// Choosing forwarding strategy
ndn::StrategyChoiceHelper::InstallAll("/prefix", "/localhost/nfd/strategy/best-route");
// Installing global routing interface on all nodes
ndn::GlobalRoutingHelper ndnGlobalRoutingHelper;
ndnGlobalRoutingHelper.InstallAll();
// Getting containers for the consumer/producer
Ptr<Node> consumers[4] = {Names::Find<Node>("leaf-1"), Names::Find<Node>("leaf-2"),
Names::Find<Node>("leaf-3"), Names::Find<Node>("leaf-4")};
Ptr<Node> producer = Names::Find<Node>("root");
for (int i = 0; i < 4; i++) {
ndn::AppHelper consumerHelper("ns3::ndn::ConsumerCbr");
consumerHelper.SetAttribute("Frequency", StringValue("10")); // 100 interests a second
// Each consumer will express the same data /root/<seq-no>
consumerHelper.SetPrefix("/root");
ApplicationContainer app = consumerHelper.Install(consumers[i]);
app.Start(Seconds(0.01 * i));
}
ndn::AppHelper producerHelper("ns3::ndn::Producer");
producerHelper.SetAttribute("PayloadSize", StringValue("1024"));
// Register /root prefix with global routing controller and
// install producer that will satisfy Interests in /root namespace
ndnGlobalRoutingHelper.AddOrigins("/root", producer);
producerHelper.SetPrefix("/root");
producerHelper.Install(producer);
// Calculate and install FIBs
ndn::GlobalRoutingHelper::CalculateRoutes();
Simulator::Stop(Seconds(20.0));
ndn::CsTracer::InstallAll("cs-trace.txt", Seconds(1));
Simulator::Run();
Simulator::Destroy();
return 0;
}
} // namespace ns3
int
main(int argc, char* argv[])
{
return ns3::main(argc, argv);
}
Above is the source file that I am creating the trace file from which can be found via this link:
https://ndnsim.net/current/metric.html?highlight=obtaining%20metrics
Thanks,
Justin Rodrigues
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