Tuning RWIN

[Brett I. Holcomb]

Okay, I did an echo somenumber > rmem_max and also rmem_default but the 
tests showed no change in the RWIN value - it was as if it never changed.  
How do I change it and make it effective?

Kurt Wall wrote:

> An unnamed Administration source, Brett I. Holcomb, wrote:
> % I've been having problems with low speed on my cable connection.
> % SpeedGuide shows a Default Receive Window (RWIN) of 5840 and indicates
> it's
> % limiting me.  Where do I change this?  According to one guide
> % /proc/sys/net/core/rmem_default is what should be tuned but that doesn't
> % seem to help.
> %
> % What do I need to adjust to increase RWIN and how do I do it.
> 
>>From $KERNEL_SRC/Documentation/filesystem/proc.txt:
> 
> /proc/sys/net/core - Network core options
> -----------------------------------------
> 
> rmem_default
> ------------
> The default setting of the socket receive buffer in bytes.
> 
> rmem_max
> --------
> The maximum receive socket buffer size in bytes.
> 
> netdev_max_backlog
> ------------------
> Maximum number  of  packets,  queued  on  the  INPUT  side, when the
> interface receives packets faster than kernel can process them.
> 
> Kurt

-- 
Brett I. Holcomb
brettholcomb at R777charter.net
AKA Grunt <><
Registered Linux User #188143
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