Unix Command for Uping Internet Speed

[stepnw1f]

I came across a Unix command line for uping internet speed on Mac OSX. Supposedly, the mac comes with a basic speed range, never taking full advantage of it's capabilities. I've reinstalled my system and now I can't find that same command line anywhere. Any Unix people know of a command line that can up your internet speed on a Mac using OSX?

[stepnw1f]

1. Well... I Found This

add this command line to your terminal and hit return:

sudo sysctl -w net.inet.tcp.recvspace=65536

[realisticphish]

2. though it might help

i avoid typing command lines that i'm not familier with into terminal. WAAAAAY too many ways for someone to fuck up your computer

[alfredo]

6. Here's the man page for sysctl

SYSCTL(8) BSD System Manager's Manual SYSCTL(8)

NAME
sysctl -- get or set kernel state

SYNOPSIS
sysctl <-bn> name ...
sysctl <-bn> -w name=value ...
sysctl <-bn> -a
sysctl <-bn> -A
sysctl <-bn> -X

DESCRIPTION
The sysctl utility retrieves kernel state and allows processes with
appropriate privilege to set kernel state. The state to be retrieved or
set is described using a ``Management Information Base'' (``MIB'') style
name, described as a dotted set of components.

The following options are available:

-A List all MIB variables including opaque variables (which are nor-
mally suppressed). The format and length are printed, as well as
a hex dump of the first sixteen bytes of the value.

-a List all the currently available non-opaque values. This option
is ignored if one or more variable names are specified on the
command line.

-b Force the value of the variable(s) to be output in raw, binary
format. No names are printed and no terminating newlines are
output. This is mostly useful with a single variable.

-n Show only variable values, not their names. This option is use-
ful for setting shell variables. For instance, to save the page-
size in variable psize, use:

set psize=`sysctl -n hw.pagesize`

-X Same as -A but prints a hex dump of the entire value instead of
just the first few bytes.

-w name=value
Used to set values. The MIB name ( name ) followed by an equal
sign and the new value ( value ) to be used.

[MalachiConstant]

3. i'm pretty happy with my connection speed right now

does it really make that much of a difference? have you noticed any problems since doing this?

[stepnw1f]

4. Pages Appear to Load Faster

And my download speed is much better.

[MalachiConstant]

5. do you know if this process is reversible?

[stepnw1f]

8. Yes It Is...

In fact, it resets after a restart. The command line I had before this one, would set the parameter for speed permanently, until you reinstalled your system.

This comand line is not permanent as far as I know. If somebody knows more, I invite them to jump in.

[alfredo]

7. What will it do for dialup?

Mac OSX hints discussion

http://www.macosxhints.com/article.php?story=20011102100318915&query=SYSCTL

[stepnw1f]

9. I Found This Yesterday

just be sure to get rid of the "%" variable in the beginning of that line.

I'm not sure if it helps dial-up, sorry.

[alfredo]

11. I guess getting broad band is the only way to speed up

dial up.

[stepnw1f]

10. I Have Finaly Found It!!

sudo -s (password)
sysctl -w net.inet.tcp.recvspace=65536
sysctl -w net.inet.tcp.sendspace=65536
sysctl -w net.inet.tcp.delayed ack=0

This is it.

Basically, all the first two commands do is bump up the buffer size for TCP (default is half of those number, or 32K). The third basically causes all TCP connections not to wait a moment before acknowledging receipt of data.

To set these back to default values,

sudo sysctl -w net.inet.tcp.recvspace=32768
sudo sysctl -w net.inet.tcp.sendspace=32768
sudo sysctl -w net.inet.tcp.delayed ack=1

or just reboot...