[iyonix-support] Re: Iyonix broadband access speeds

In message <4EEBD0897E%andy-l@xxxxxxxxxx>
 on 31 May 2007 Andy Wingate <andy-l@xxxxxxxxxx> wrote:

> In message <a7c3ceeb4e.druck@xxxxxxxxxxxxxxxx>
>           "David J. Ruck" <druck@xxxxxxxxxxxx> wrote:

>> On 31 May 2007 Andrew Pinder <Andrew.Pinder@xxxxxxxxxxxxx> wrote:
> [snip]
>>> RWIN is "Default TCP Receive WINdow".  I got different RWIN values
>>> from Firefox2/RO511 and IE6/Win98SE and the recommendation from both
>>> tests was to increase the value significantly
>> 
>>> I can't find any reference to RWIN anywhere in RISC OS - it isn't a
>>> system variable.  My questions are: In RO 5 who or what sets it?  The
>>> browser?  The OS?  The TCP/IP stack? The ADSL modem/router?  Do we
>>> need an upgrade to the OS to allow us to make full use of DSLmax?
>> 
>> I don't beleive its setable in RISC OS, although there could be a
>> *sysctl option that does it. [...]

> *sysctl -w net.inet.tcp.recvspace=<value>
> (optionally -ew instead to write errors to Inet$Error)

> See *sysctl -a (or even -A)

Now that IS obscure if druck doesn't know about it!  Is there 
documentation available?

> As David says, although bumping up the value to 65536 or similar may
> make some difference it isn't going to be earth shattering.

It makes no discernible difference - tests just now were at the low 
end of the normal range

The ISP recommended 153144.  sysctl will accept that or larger 
figures. speedguide.net reports anything bigger than 65532 as 65532.

Rebooting reset the value - where would an Obey file to set it on 
boot-up need to be placed?

> Andrew: please can you remove the hard spaces from your Message-IDs? I
> guess you have a hard space between Andrew and Pin in your username in
> Messenger Pro.

I've responded to this point on Messenger-l

Regards

-- 
Andrew Pinder
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