[SOLVED] Changing RWIN value

[x1a4]

Hi,

How would I go about changing the RWIN value?

Thank you.

[x1a4]

Figured it out. The Linux kernel has the following TCP/Net options. The values are what I came up with for my system. If you want to change these make sure to do your homework and find values which are optimal to your system and Internet connection.

net.core.rmem_default = 256960
net.core.rmem_max = 16777216
net.core.wmem_default = 235116
net.core.wmem_max = 16777216
net.ipv4.tcp_rmem = 5120 256960 16777216
net.ipv4.tcp_wmem = 5120 235116 16777216

*rmem_* receive memory space
*wmem_* send memory space

I added these to /etc/sysctl.conf and executed

sysctl -p

to make the changes permanent.

When I was testing I executed

sysctl -w option=value

I also optimized my connection a little by changing values for my Ethernet card using ifconfig like so:

ifconfig -v eth0 mtu 1492 txqueuelen 1024

MTU or Maximum Transmission Unit is the size (in bytes) of the largest packet. On my connection 1492 is the largest packet I can have without fragmentation.

txqueuelen is the length of the transmit queue, increasing this relieves congestion--if you have a slow connection set this to a lower value.