RWIN

Hi Baron

From memory in the /proc "filesystems. ie by echoing a value to the
right parameter. eg

echo 1 > /proc/sys/net/ipv4/tcp_moderate_rcvbuf
echo 108544 > /proc/sys/net/core/wmem_max
echo 108544 > /proc/sys/net/core/rmem_max
echo "4096 87380 4194304" > /proc/sys/net/ipv4/tcp_rmem
echo "4096 16384 4194304" > /proc/sys/net/ipv4/tcp_wmem

I think you can also do it with sysctl

You can also "cat" the same location to find current values.

If you want it to happen permanently put the commands into
/etc/rc.d/boot.local


Cheers Bob


Baron wrote:
> Hi Guys,
>
> Does anyone know where the "RWIN" value is set/configured in "OpenSuSE
> 10.2" ? I cant find it in "YAST" nor can I find the right file
> in "/etc".
>
> Thanks.
>

On Sat, 12 Sep 2009 21:36:33 -0500, Bob Bob wrote:
> If you want it to happen permanently put the commands into
> /etc/rc.d/boot.local

Why not in the sysctl.conf or appropriate /etc/sysctl.d/file ?

Baron wrote:

> Hi Guys,
>
> Does anyone know where the "RWIN" value is set/configured in "OpenSuSE
> 10.2" ? I cant find it in "YAST" nor can I find the right file
> in "/etc".
>
> Thanks.
>

Thanks to all who replied. Very useful information.
I put the required bits into "sysctl.conf" which seems to work just
fine. Originally there wasn't any values in at all.

I added :-
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_rmem = 4096 87380 16777216
net.ipv4.tcp_wmem = 4096 65536 16777216

--
Best Regards:
Baron.

Bob Bob wrote:
I think you can also do it with sysctl

The major advantage of doing it with sysctl(.conf) is that it will
also be done after the next reboot.

> You can also "cat" the same location to find current values.
>
> If you want it to happen permanently put the commands into
> /etc/rc.d/boot.local

And that - thus - isn't necessary when you put the values in the
/etc/sysctl.conf file. All newer kernels support this and the bootup
will auto-run the sysctl program to set those values.
--
Eef Hartman, Delft University of Technology, dept. SSC/ICT