Lurch produces a tar.gz archive at the end of the experiment and transfers it to the folder in the remote server indicated in Myglobals.py. The archive contains the following folders:
- scenario: Contains the files describing the experiment namely topo.brite, routing.dist, workload.dist, Myglobals.py, hosts, lurch.conf and the script folder (containing every script used to setup links and routing in the experiment);
- log: Contains the results of the experiment: link stats, nfd log, and lurch log that contains the output of the applications launched during the experiment.
The tool used for link bandwith measurments is ifstat. The links statistics are stored in the log/ folder under the name
link_#from_#to.log. Each file is compose by a
sequence of lines for each second of the experiment:
HH:MM:SS KB/s in KB/s out 19:15:10 40.54 1189.61
For a complete description of ifstat output please refer to
Lurch.log reports messages sent from the hosts during the experiment. In particular this file records the output of the application launched for the experiment. If the customized version of the NDNx code is used, the application launched is a file downloader with interest rate control described here and the log reports for each download Started and completed lines that are respectively:
event_time - filename - num. of chunks - hostname:client_id 1414606590.5044, * Starting download of content ndn:/video/OBJNUM00001 size 500 chunks from host:client graphene-38.nancy.grid5000.fr:0 event_time - filename Througput[Mbps] Goodput[Mbps] Download time[s] hostname client_id interest_retr_timeouts 1414606593.4787, Completed, ndn:/video/OBJNUM00001, 6.685616, 5.879628, 2.786571, graphene-38.nancy.grid5000.fr, 0, 0
nfd logThe name of the NFD logs' file are of the format
node_#nodeID.log. Please refer to NFD documentation for a through explanation of the nfd.log file. In addition to standard NFD logs, if the customized version of the NDNx code is used, the interest forwarder implements the interest forwarding strategy is the one from here" and displays statistic about the number of interests forwarded on the different interfaces.