Monitoring
Viewing the Network Performance ( new in gigEnn )
You can see the bandwidth results with many different tools
trafshow
an easy way to see which machines are overloading the network
netstat
generic netstat cannot be used for xplot ( graphs )
Use our modified and enhanced netstat
gigEnn netstat.nn
ntop
invoke ntop in one xterm window
gigEnn ntop
additionally, ntop requires apache and mozilla for viewing:
mozilla localhost:5000
NetPIPE = Network Protocol Independent Performance Evaluator
tcpdump
lots of data .. typically keeps the network admins happy
related links
tcpdump grapher
tcptrace - reads tcpdump
tcpdrpiv - reads tcpdumo tcpdstat - reads tcpdump
tcpstat
Graphs
mrtg
too much (snmp) headache for fancy graphs ??
gnuplot
xplot
gigEnn netstat.xplot.nn
gigEnn xplot /tmp/netstat.xplot.data
^ TCP Probe
plot jitter
differences in receive time values
Estimating Bandwidth
see apps and links above