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Re: [Samba] samba 4.x slow ...

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 (ipv4: 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).


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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