Samplex

Q: El Capitan 10.11.5 update SMB slow (bug)

Since i upgraded my Macbook Pro Retina 2015 to 10.11.5 SMB transfers speeds to my Synology NAS are not going faster then 25Mbit.

When i use AFP i get 110Mbit speeds to my nas.

 

Tested a Mac Mini which has 10.11.4 and the SMB and AFP speeds are good 110Mbit.

Upgraded that mac mini to 10.11.5 and i get 25Mbit speed max using SMB!

 

Seems like bug in the SMB protocol of El Capitan release 10.11.5

MacBook Pro with Retina display, OS X El Capitan (10.11.5)

Posted on May 18, 2016 7:45 AM

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Q: El Capitan 10.11.5 update SMB slow (bug)

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  • by Seth Goldin,

    Seth Goldin Seth Goldin Jul 21, 2016 5:48 AM in response to Tom521
    Level 1 (4 points)
    Mac OS X
    Jul 21, 2016 5:48 AM in response to Tom521

    Is your Drobo a NAS device that's using SMB? What model of Drobo is this?

  • by Tom521,

    Tom521 Tom521 Jul 21, 2016 6:03 AM in response to Seth Goldin
    Level 1 (4 points)
    Mac OS X
    Jul 21, 2016 6:03 AM in response to Seth Goldin

    The Drobo is a NAS, model 5N connected via 1000baseT ethernet. The present connection shows as smbf

  • by chanyunsang3,

    chanyunsang3 chanyunsang3 Sep 1, 2016 3:21 AM in response to Samplex
    Level 1 (4 points)
    Mac OS X
    Sep 1, 2016 3:21 AM in response to Samplex

    Dear Samplex

     

              I am glad to solve your problem as an software engineer. Firstly, i have found that OS X El Capitan seems to appear some bugs or glitches related to the SMB connection. As you may notice that AFP connection is perform more stable and faster and Apple Mac does not natively support SMB protocol. Currently, Apple's Developers is now working on those bugs. Therefore, i have a few solution for you:

     

             1. Use APF connection instead of SMB connection

             2. Use FTP or CIFF connection

             3. Downgrade from OS X El Capitan to OS X Yosemite ( This option is the most preferred as OS X 10.10 is more stable than El Capitan. )

     

         Last but not least, whatever you succeeded or not please notice me and i will help you to figure that out.

     

    Sincerely,

         Ethan The PC Guy

  • by thierry 8p,

    thierry 8p thierry 8p Sep 20, 2016 7:49 AM in response to Samplex
    Level 1 (8 points)
    Sep 20, 2016 7:49 AM in response to Samplex

    We're also experiencing such problem... worse, no connectivity at all.

     

    1. All windows computers in the office can connect
    2. All mac computers in the office can connect. EXCEPT the two single computers updated to El Capitan.

     

    All the El Capitan computers can:

    1. reach the local samba server as the can get authenticated (Wrong password is refused)
    2. get authenticated
    3. see the available shares in the connection window.

     

    But... after selecting the share

    • the process dialog never ends.
    • Finder needs to be relaunched eventually to get rid of the dialog.
    • We never see the files.

     

    I tried everything in this thread (AFP, CIFS, changing /etc/nsmb.conf, ). No luck.

    For what it's worth, the two ElCapitan computers can SMB together.

  • by Seth Goldin,

    Seth Goldin Seth Goldin Sep 20, 2016 11:17 AM in response to Samplex
    Level 1 (4 points)
    Mac OS X
    Sep 20, 2016 11:17 AM in response to Samplex

    Has anyone tried macOS Sierra without client signing disabled in their nsmb.conf file? I'd love to know if Apple has fixed this.

  • by Seth Goldin,

    Seth Goldin Seth Goldin Sep 20, 2016 11:54 AM in response to Seth Goldin
    Level 1 (4 points)
    Mac OS X
    Sep 20, 2016 11:54 AM in response to Seth Goldin

    I went poking around in the macOS Sierra section of the Apple Support Communities, and it looks like someone was still having trouble with SMB signing in macOS Sierra: AFP vs SMB Performance

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