[Samba] samba 4.x slow ...

Dr. Peer-Joachim Koch pkoch at bgc-jena.mpg.de
Fri Nov 3 12:54:10 UTC 2017


Hi Micha,

no, I have to this. I'm normally just check what smbstatus shows:

33837   BGC\pkoch    users        XXX (ipv4:XXX:51118)    SMB2_10

Bye the way - 45 MB/s is not so bad, I just wanted to know if it's 
possible to get 90MB/s or at 10G a little bit more.
What has been messaured  ?

I used on a new HPC node (10G) smbclient to test the transfer speed and 
get (10G<->10G) 199MB (mtu 1500).

33692     pkoch         users         10.0.3.100 (ipv4:10.0.3.100:54821) 
NT1

Using smbclient (using NT1) we see the following values:

Cl             Server (using get)
10GB <-> 10GB      199MB/s
10GB <-> 2x1GB    162MB/s  (??? )
   1GB <-> 2x1GB     60MB/s


Cl             Server (using put)
10GB <-> 2x1GB    ~100MB/s
   1GB <-> 2x1GB        50MB/s

Bye, Peer


On 03.11.2017 11:58, Michael Arndt wrote:
> just to verify basic facts:
>
> Did you cross check vie network sniff, on which SMB protocol versions Server + Win 7 clients agree ?
> Or did you pin down via registry ?
>
> AFAIK only starting with win 8 or win 10 clients you could ask with powershell, which protocol version is in use.
>
> Did you also cross check  samba logs for a name resolution issue ( windows names, not DNS)
> if one of your boxes is an commercial appliance alignment issues may be excluded ...
> if you get reasonable throughput  via NFS, this points to  "where is a difference in your environment between NFS and SMB / CIFS).
>
> hth
> Micha
>

-- 
Mit freundlichen Grüßen,
     Peer-Joachim Koch
________________________________________________________

Max-Planck-Institut für Biogeochemie
Dr. Peer-Joachim Koch
Hans-Knöll Str.10            Telefon: ++49 3641 57-6705
D-07745 Jena                 Telefax: ++49 3641 57-7705




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