throughput ?

[kennyen]

Hi All,

i have a linux redhat 8.0 as my ftp server. when i try retrieve file from ftp server from a winxp laptop i can get ~ 30Mbps.
when i retrieve file from a Debian client with kernel 2.6.9 i only can get ~ 7Mbps.
when i try retrieve file from a FC3 pc i have ~ 85Mbps.

All machine are connected to a same switch and all linux machine have optimized kernel turning as shown below,

#net.core.rmem_max = 67108864
echo 67108864 > /proc/sys/net/core/rmem_max 

#net.core.wmem_max = 67108864
echo 67108864 > /proc/sys/net/core/wmem_max 

#net.core.rmem_default = 65536
echo 65536 > /proc/sys/net/core/rmem_default

#net.core.wmem_default = 65536
echo 65536 > /proc/sys/net/core/wmem_default

#net.ipv4.tcp_rmem = 4096 87380 67108864
echo "4096 87380 67108864" > /proc/sys/net/ipv4/tcp_rmem

#net.ipv4.tcp_wmem = 4096 65536 67108864
echo "4096 65536 67108864" > /proc/sys/net/ipv4/tcp_wmem

#net.ipv4.tcp_mem = 8388608 8388608 67108864
echo "8388608 8388608 67108864" > /proc/sys/net/ipv4/tcp_mem

I wish to know why so much different ? 


thanks,

kennyen
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