afp/smb transfers caps at 2 megabytes/sec, wireless N

Posted by CQM on Server Fault See other posts from Server Fault or by CQM
Published on 2012-06-19T12:56:43Z Indexed on 2012/06/20 3:17 UTC
Read the original article Hit count: 478

Filed under:

macosx

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network-share

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bandwidth

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file-sharing

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afp

I wanted to transfer files between two mac computers. The network is wireless-N and both computers have wireless-N modules in them.

The problem is that when I transfer files between them, via file sharing (afp) the network speed caps at 2 megabytes/sec. Just downloading files from the internet I can get faster speeds, so this isn't a constriction of my wifi bandwidth, it appears to be a constriction of the protocol being used.

My wifi-n is set to 130mbits, so I should see real world transfer speeds around 12-16 megabytes/sec

I did this command on both computers sudo sysctl -w net.inet.tcp.delayed_ack=0 which is supposed to lower tcp overhead, but this did not affect it.

How can I get the speed I am expecting?

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