[Samba] Problems with OS X 10.11.5

Volker Lendecke Volker.Lendecke at SerNet.DE
Thu Jun 2 06:48:34 UTC 2016

On Wed, Jun 01, 2016 at 07:44:26PM +0000, Seth Goldin wrote:
> I disabled client signing from the client side, via OS X's global nsmb.conf
> file: https://discussions.apple.com/message/30282470#30282470
> The performance was back to over 600 MB/s, as compared to 60 MB/s with
> signing.
> It just seems a bit weird to me that Apple, in response to the Badlock bug,
> would have changed the OS X client default to something with such drastic
> performance implications, without much notice. My contact at Apple said
> that the engineers were able to replicate the slow performance on OS X
> Server as well, so even if they didn't test it with Samba on Linux or
> FreeBSD servers, they might have just been too hasty in their response to
> Badlock. I wonder if they had only tested OS X clients with Windows Server.
> I wonder what that performance looks like, but I don't have access to
> Windows Server.

What protocol is this? Metze has patches to use hardware-accellerated
AES so that latest 3.11 will have much less impact on performance.

I'm not sure those patches have already landed, but I want to counter
the impression that signing is sooo bad for performance. It can be
good, given the right protocol and CPU support.


SerNet GmbH, Bahnhofsallee 1b, 37081 Göttingen
phone: +49-551-370000-0, fax: +49-551-370000-9
AG Göttingen, HRB 2816, GF: Dr. Johannes Loxen
http://www.sernet.de, mailto:kontakt at sernet.de

SerNet & BSI laden ein: 29. Juni 2016,
2. IT-Grundschutztag 2016, BPA Berlin.
Anmeldung: https://www.sernet.de/gstag

More information about the samba mailing list