Hardware Used:
Processors: Dual Intel Pentium Processors (1 GHz)
Memroy: 1 GB
Network: Two 1 GigE cards, one 100 MB FastE card, 32 bit PCI card
OS: Linux 2.4.19 with Web100
Network Path Information:
Path: PSC to ISI-East
RTT: about 10 msec
WAN Link: 1 GigE
NOTE: The end-2-end path is GigE
Data transfer rates at various MTUs was measured using iperf. Five tests were done for each MTU size.
Effect of locking down an interrupt to a particular CPU (John Heffner's suggestion to get maximum performance):
Default 966 881 927 875 876 919 901 833 (Avg: 897) Fixing irq 20 to CPU1 922 912 946 921 872 915 916 886 (Avg: 911)Please see http://www.psc.edu/~mathis/MTU/ for additional information on MTU issues.