October 10th, 2007

For as long as I can remember I have had issues with the speed of transferring files between my mac (laptop / imac) and the windows XP machine I have. It would take what seemed an eternity to copy files and was so slow in most cases that I simple didn’t bother and found it easier to burn the info on a cd and put it in the other computers drive… silly eh?

Anyway, through the power of google I stumbled across a [post](http://echeng.com/journal/2006/09/13/mac-os-x-slow-network-performance-to-windows-xp/) on [Eric Cheng's site](http://echeng.com) which had the following solution.

1. Disable IPv6 on Mac OS X (System Preferences->Network->Configure->Configure IPv6->Off)
2. Uninstall ipv6 on Windows XP via command line:
netsh interface ipv6 uninstall
3. On MAC OS X, set ACK no delay by adding:
socket options = TCP_NODELAY IPTOS_LOWDELAY
to your /etc/smb.conf file.

I did exactly this and now my network is running a heck of a lot faster!