[Samba] Problems with OS X 10.11.5

[Jeremy Allison]

On Thu, May 26, 2016 at 02:53:21PM +0000, Seth Goldin wrote:
> Hello,
> 
> I just wanted to check in on this list and see what folks know about the
> new severe performance problems with OS X 10.11.5.
> 
> There's a comment on Reddit claiming that 10.11.5 is requiring SMB signing,
> but I haven't found documentation on that.
> 
> I myself saw performance on my 10 GbE go from 800 MB/s on 10.11.4 to 60
> MB/s on 10.11.5. My NAS is running Samba 4.3.6 on FreeNAS, which is a
> FreeBSD derivative.
> 
> I'd love the reassurance that whoever can fix this is doing so--either the
> Apple developers or the Samba developers.
> 
> Thanks in advance for any information you can provide.

Has anyone done any wireshark analysis of the difference
between 10.11.4 (fast) and 10.11.5 (slow) ? With such
a drastic drop 800 MB/s -> 60 MB/s there should be an
obvious difference in the packet flow.