I have some older hardware (linux is running on a 1900+ athlon xp nforce2 based board and my win box is a 3200+ athlon xp nforce2 based board) which may explain the giant boost of larger frame size. Here are the results of my tests moving a large file (about 1 gig) from the win to linux and from linux to win. I've concluded that my network would HUGELY benefit from a 4k MTU size. Here are the data:
Test Large file, 1,048,522 kb xfered via Samba
Both NICs running @ full duplex 1 gig mode
[code:1:9c4d28d1b6]mtu=1500 time (sec) MB/sec Mbps
linux to win 59 21.2 170
win to linux 94 13.3 107
mtu=4000
linux to win 51 24.6 197
win to linux 46 27.2 218
mtu=9000
linux to win 57 22.0 176
win to linux 49 25.6 205[/code:1:9c4d28d1b6]
My conclusions
[code:1:9c4d28d1b6]4k vs. standard % Change
linux to win 16%
win to linux 104%
9k vs. standard
linux to win 4%
win to linux 92%
[/code:1:9c4d28d1b6]
What's striking to me is that my network is not even close to the theoretical limit of gigalan (1000 Mbps). Are my numbers typical or is my setup slow?
Can others with gigalan switches or crossover cable setups do a test like this? Get yourself about a 1 gig file and transfer it. If you're using windows, use a stop watch or robocopy to time your results and post them here.
Test Large file, 1,048,522 kb xfered via Samba
Both NICs running @ full duplex 1 gig mode
[code:1:9c4d28d1b6]mtu=1500 time (sec) MB/sec Mbps
linux to win 59 21.2 170
win to linux 94 13.3 107
mtu=4000
linux to win 51 24.6 197
win to linux 46 27.2 218
mtu=9000
linux to win 57 22.0 176
win to linux 49 25.6 205[/code:1:9c4d28d1b6]
My conclusions
[code:1:9c4d28d1b6]4k vs. standard % Change
linux to win 16%
win to linux 104%
9k vs. standard
linux to win 4%
win to linux 92%
[/code:1:9c4d28d1b6]
What's striking to me is that my network is not even close to the theoretical limit of gigalan (1000 Mbps). Are my numbers typical or is my setup slow?
Can others with gigalan switches or crossover cable setups do a test like this? Get yourself about a 1 gig file and transfer it. If you're using windows, use a stop watch or robocopy to time your results and post them here.