how to set RWIN

[h2sammo]

how do i go about setting the rwin value in linux mint? i made some google searches and found similar questions with no concrete answer. please help.

ex: http://www.dslreports.com/faq/586

[eanfrid]

The name "RWIN" is a Windows feature. For a desktop Linux, there is no real reason to alter the defaut values but if you want to, you must modify /etc/sysctl.conf and add these lines (near-optimal values):

Code: Select all

net.core.rmem_default = 256960
net.core.rmem_max = 256960
net.core.wmem_default = 256960
net.core.wmem_max = 256960

then "sudo sysctl -p" and you're done.

[h2sammo]

thank you.

so if i use this tool, it tells me to modify the rwin. (http://www.dslreports.com/tweaks)

what is the difference between rmem and wmem and how do they relate to rwin value?

[eanfrid]

rmem is rwin
rmem => receive window; wmem => write (send) window

Buffers have automatically calculated values for most uses. Unless very high latency, heavy packet-loss or very high performance requirements are in your mind, buffer settings do not have to be tuned at all. The real question is: why do you want to modify these values ?

[h2sammo]

i remember back in my few windows days this tweak used to improve my cable connection based on the dsl reports tool.

[eanfrid]

Linux is not Windows