Linux network performance / bandwidth / monitor tools

Network performance tool (Software based):

• NetPerf
• IPerf / KPerf
• UPerf
• Chariot
• fping
• NetSpec
• NetTest
• TTCP
• UDPmon
• Ostinato
• D-ITG
• Seagull
• Wireshark
• Triberr
• Apache ab
• pfsend
• tcpreplay
• NETIO

Network monitor tool (Software based):

• vnstat
• iftop
• bmon
• KNemo
• Wireshark
• TCPDump
• EtherApe
• iptraf
• speedometer
• htop
• dstat
• ethtool

Ref:

• http://www.thegeekstuff.com/2011/12/linux-performance-monitoring-tools/
• http://www.ubuntugeek.com/bandwidth-monitoring-tools-for-linux.html
• http://82.157.70.109/mirrorbooks/linuxperformanceguide/0131486829/ch07lev1sec2.html
• http://en.wikipedia.org/wiki/Packet_generator
• http://www.icir.org/models/trafficgenerators.html