Fixing slow SMB

The sysctl -w net.inet.tcp.delayed_ack=0 tip worked for me. I found all these posts interesting and helpful as I have been looking for a fix for the slow Windows fileshare browsing issue for quite a while! I will probably try the Windows server registry hack as well: http://support.microsoft.com/kb/328890/en-us

To make the setting “stick” through a reboot, you need to edit the /etc/sysctl.conf file by adding net.inet.tcp.delayed_ack=0 to it.

You can edit it with vi in Terminal as root or TextEdit by doing Go to Folder -> /etc.

I noticed that the Windows article asks you to set the delayed ack to “1″ and one of your other posters stated that the best performance for the sysctl command is also “1.” There must be a connection, I think.