[Samba] High CPU load with multiple SMB processes with Yosemite clients

[L.P.H. van Belle]

Know bug i beleave. 

This is fixed in the latest releases but not shown in the change log. 
So update to big newer samba like 4.2.12. latest 4.3 or latest 4.4 


Greetz, 

Louis


> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens Luc Lalonde
> Verzonden: woensdag 11 mei 2016 16:51
> Aan: samba at lists.samba.org
> Onderwerp: [Samba] High CPU load with multiple SMB processes with Yosemite
> clients
> 
> Hello Folks,
> 
> We just moved our Samba file server from version 3.6.3 to 4.2.10 (the
> lastest updates for CentOS 7.2).
> 
> Our Windows clients are working well, but we are unable to use it for
> our Mac clients (Yosemite).
> 
> The clients are configured to use their home directories from this file
> server.
> 
> Here's the config:
> 
> [global]
>          workgroup = BLAH.COM
>          netbios name = FILESERVER
>          netbios aliases = FILESERVER
>          server string = Serveur fichier INFO
>          security = DOMAIN
>          password server = LDAP.BLAH.COM
>          encrypt passwords = Yes
>          log file = /var/log/samba/%m.log
>          max log size = 500
>          load printers = No
>          printing = cups
>          cups server = cups.blah.com
>          domain logons = No
>          os level = 20
>          local master = Yes
>          preferred master = No
>          domain master = No
>          wins server = 132.207.180.14
>          host msdfs = Yes
>          socket options = TCP_NODELAY SO_KEEPALIVE IPTOS_LOWDELAY
> SO_SNDBUF=8192 SO_RCVBUF=8192
>          kernel oplocks = yes
>          strict locking = No
>          oplocks = yes
>          level2 oplocks = yes
>          deadtime = 15
>          unix extensions = yes
>          wide links = yes
>          allow insecure wide links = yes
>          unix charset = UTF8
>          unix password sync = No
>          hide files = /Desktop.ini/RECYCLER/$RECYCLE.BIN/lost+found/
>          smb ports = 445 139
>          veto files = /Temporary Items/Network Trash
> Folder/.AppleDB/.AppleDouble/.AppleDesktop/.AppleDB/.DS_Store/
>          delete veto files = Yes
>          map untrusted to domain = Yes
>          acl allow execute always = True
> 
> [homes]
>          comment = homes
>          read only = No
>          directory mask = 0700
>          force directory mode = 0700
>          create mask = 0600
>          force create mode = 0600
>          browseable = No
>          valid users = %S
>          follow symlinks = yes
> 
> [profiles]
>          comment = Users Profile Directories
>          path = /store/profiles
>          store dos attributes = Yes
>          read only = no
>          create mask = 0600
>          directory mask = 0700
>          profile acls = no
>          csc policy = disable
> 
> I haven't tried recompiling the latest version (4.4.3) to see if I have
> the same behaviour...   I would like to keep the stock CentOS packages
> if I can.
> 
> Thank You!
> 
> --
> Luc Lalonde, analyste
> -----------------------------
> Département de génie informatique:
> École polytechnique de MTL
> (514) 340-4711 x5049
> Luc.Lalonde at polymtl.ca
> -----------------------------
> 
> 
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