Apple releases Broadband Tuner

Apple releases Broadband Tuner for users with very high speed internet connection (5 Mbps or greater).

About Broadband Tuner
The Broadband Tuner allows you to take full advantage of very high speed Internet connections that have a high latency (5 Mbps or greater). The installer tweaks some system parameters.

There is an optional uninstaller that can be used to restore the settings that were in effect at the time just before the system parameters were changed.

> download Broadband Tuner 1.0


What does the Broadband Tuner do exactly?

The installer increases the default values for the size of the TCP send and receive buffers. With larger buffers more data can be in transit at once. A startup configuration file is also updated so that these changes will persist across restarts.

The system parameters are sysctl variables that are set as follows:
net.inet.tcp.sendspace: 131072
net.inet.tcp.recvspace: 358400
kern.ipc.maxsockbuf: 512000

This change has a system wide effect and is applied even if the network is not high speed connection with a high latency, with the exception of modem connections for which the system uses small default TCP buffer sizes.

System requirement: Mac OS X 10.4 or later

> download Broadband Tuner 1.0

Posted by Antony at November 29, 2005 11:21 PM

>> more MacCentre701 November 2005 reports.