TCP Window size question

Hi

Can we change these files to tune network performance in embedded
linux ?

/proc/sys/net/core/rmem_max
/proc/sys/net/core/wmem_max
/proc/sys/net/core/rmem_default
/proc/sys/net/core/wmem_default

Does it control recieve(RX) or send (TX) performance ?

If it is a P2P or client-server traffic testing , should we change the
other
device TCP Window size too ?

Is there suggested value for Internet or LAN point device ?

Thank you

On Jan 29, 7:48=A0am, Kid <kid197...@yahoo.com.tw> wrote:
> Hi
>
> Can we change these files to tune network performance in embedded
> linux ?
>
> /proc/sys/net/core/rmem_max
> /proc/sys/net/core/wmem_max
> /proc/sys/net/core/rmem_default
> /proc/sys/net/core/wmem_default
>
> Does it control recieve(RX) or send (TX) performance ?
>
> If it is a P2P or client-server traffic testing , should we change the
> other
> device TCP Window size too ?
>
> Is there suggested value for Internet or LAN point device ?
>
Try end-to-end Qos Implementation.
Many techniques are there to bring in improvement.
DiffServ and MPLS look gud.

Karthik Balaguru

On Jan 29, 7:48=A0am, Kid <kid197...@yahoo.com.tw> wrote:
> Hi
>
> Can we change these files to tune network performance in embedded
> linux ?
>
> /proc/sys/net/core/rmem_max
> /proc/sys/net/core/wmem_max
> /proc/sys/net/core/rmem_default
> /proc/sys/net/core/wmem_default
>
> Does it control recieve(RX) or send (TX) performance ?
>
> If it is a P2P or client-server traffic testing , should we change the
> other
> device TCP Window size too ?
>

If you are planning to play with TCP window size, be careful with the
sliding window algorithm.

Karthik Balaguru

> If it is a P2P or client-server traffic testing , should we change the
> other
> device TCP Window size too ?
>
> Is there suggested value for Internet or LAN point device ?
>
> Thank you

The default window size settings on Linux should be OK for most
applications. The only exceptions are satellite links.

BTW, comp.protocols.tcp-ip would be a better newsgroup for this
question.

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