increasing Networkspeed

On Sun, 27 Aug 2006 19:45:19 +0200
Thilo Six <T.Sixgmx.de> wrote:

> 
> Vincent Trouilliez wrote the following on 27.08.2006
18:31:
> 
> <snip>
> > Of course I am interested.. who wouldn't ?? 


Hi Thilo and Vince  

I'm interested too - and did a bit of googling about
sysctl.conf settings for adsl2 - 2+  etc. ( see below )

> 
> OK now that you have asked... ;)
> 
> 1. /etc/sysctl.conf
>
============================================================
===========
> With this file you can edit your kernel directly. We
want to edit the
> TCP-Buffers. per default it is quite small, which is
bad for throughput.
> 
> <-----------------------------------------------
> # increase TCP max buffer size
> net.core.rmem_max = 4194304
> net.core.wmem_max = 4194304
> # increase Linux autotuning TCP buffer limits
> # min, default, and max number of bytes to use
> net.ipv4.tcp_rmem = 4096 87380 4194304
> net.ipv4.tcp_wmem = 4096 87380 4194304
> - ----------------------------------------------->

The URL I post below seems to take the view that only the
receive max
actually needs changing, since the wmem appears to refer to
the upstream,
which is typically much less on adsl ( the writer thinks the
default here
is enough, apparently - don't ask me, I know very little
about adsl... but
it made sense to me. )
> 
> you can play with this settings, just make sure the
number of
> net.core.rmem_max / net.core.wmem_max and the last
number in
> net.ipv4.tcp_rmem / net.ipv4.tcp_wmem are the same!

I'm not sure if this is right, according to the page I link
below. See
what you think ...


http://
www.aarnet.edu.au/~gdt/articles/adsl2/

Care to comment on this URL ? ( Vince might find it
interesting too )
So far, I've tried the settings from that page - can't say
I've noticed any
dramatic difference though  (My
actual downstream sync speed is usually
around 15-15.5 Mbits/sec here,, with upstream usually 831
KB/s )

Peter




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On Mon, 28 Aug 2006 18:39:51 +1000
Peter Garrett <peter.garrettoptusnet.com.au> wrote:

> On Sun, 27 Aug 2006 19:45:19 +0200
> Thilo Six <T.Sixgmx.de> wrote:
> 
> > 
> > Vincent Trouilliez wrote the following on
27.08.2006 18:31:
> > 
> > <snip>
> > > Of course I am interested.. who wouldn't ??


[snip]

> http://
www.aarnet.edu.au/~gdt/articles/adsl2/
> 
> Care to comment on this URL ? ( Vince might find it
interesting too )
> So far, I've tried the settings from that page -
can't say I've noticed any
> dramatic difference though  (My
actual downstream sync speed is usually
> around 15-15.5 Mbits/sec here,, with upstream usually
831 KB/s )

OOps!

Apologies for the double post - I meant 831 Kbits, not KB of
course !
Hmm, 831 KB up would be nice for torrents... dream on ...

Peter

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-----BEGIN PGP SIGNED MESSAGE-----
Hash: RIPEMD160

Peter Garrett wrote the following on 28.08.2006 10:39:

<snip>

> The URL I post below seems to take the view that only
the receive max
> actually needs changing, since the wmem appears to
refer to the upstream,
> which is typically much less on adsl ( the writer
thinks the default here
> is enough, apparently - don't ask me, I know very
little about adsl... but
> it made sense to me. )
<snip>

I have thought that recently, too. But havenīt changed that
since.
But you may play a little with different settings and check
if that
works for you.

...and maybe let us know? ;)

> Peter

bye Thilo

PS. > ...I meant 831 Kbits, not KB of course !

   ooh boy thatīs half of my downstream. lucky you are.  ;)
- --
i am on Ubuntu 2.6 KDE
- - some friend of mine

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