SMB Slow - MacBook to Windows, Help Please

Discussion in 'macOS' started by vito, Jan 28, 2011.

  1. vito macrumors 6502a

    Apr 4, 2006
    Manchester, UK

    Could really do with some expert advice :)

    I have a Windows 2008 R2 server which has a shared drive serving content via SMB to my MacBook Late 2008 over Gigabit Ethernet.

    I've tested copying files back and forth and even though the MacBook has a SSD so no bottle neck there, the transfer rates fluctuate around ~30MB/sec and may start higher around 55MB/sec dropping rapidly :eek:

    I've tried a Windows to Windows machine and it sustains higher speeds thoruhgout the transfer process :(

    I've tried the following command but it hasn't helped much

    sudo sysctl -w net.inet.tcp.delayed_ack=0

    Anyone got any tips n tricks maybe? :confused:

    Thanks guys :D
  2. MisterMe macrumors G4


    Jul 17, 2002
    SMB is a proprietary Microsoft network protocol. Why does it surprise you that it is faster on Windows than on the Mac?
  3. vito thread starter macrumors 6502a

    Apr 4, 2006
    Manchester, UK
    Nothing which concerns Microsoft surprises me any more!

    It was a little faster from Windows 2008 > Windows 2008.

    I'm not overly concerned just thought someone else might have had this issue and found somewhat of a fix / improvement.

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