[Samba] Slow samba transfer
Aaron Kincer
kincera at gmail.com
Mon Jan 22 14:47:46 GMT 2007
What environment are you doing this in? In other words, is this over a
wireless connection to a remote site? Perhaps something else?
As a general rule of thumb, SMB is a MUCH less efficient protocol than
others such as FTP. In a near perfect world (i.e. a controlled real
world setting), I've found SMB to be between 35% and 45% as fast as FTP.
This was independent of operating system.
If you are doing SMB over a wireless link, it can be even worse if you
have a problematic wireless connection that requires lots of
retransmits. I'm betting you are doing this over wireless and you've got
some serious interference or other issues going on. Am I even close?
Roberto su tiscali wrote:
> Thats the diagnosis:
> transfering the same file via smb, scp and ftp I got big speed
> differences.
> SMB:
> file : 1Gb, transfer rate 15-35 kb/s
> SCP:
> file : 1Gb, transfer rate 360-780 kb/s
> FTP:
> file : 1Gb, transfer rate 360-780 kb/s
>
>
> Why is via smb so slow?
> Attachment is my own smb:conf, the same that's on air.
>
>
> [global]
> workgroup = NO1KNOWS
> netbios name = PBT
> server string = Samba %v, File server
> ; wins support = no
> ; wins server = w.x.y.z
> dns proxy = no
> os level = 64
> ; name resolve order = lmhosts host wins bcast
> log file = /var/log/samba/log.%m
> max log size = 50
> ; syslog only = no
> syslog = 0
> panic action = /usr/share/samba/panic-action %d
>
> ####### Authentication #######
> security = user
> encrypt passwords = yes
> passdb backend = tdbsam guest
> obey pam restrictions = yes
> ; guest account = nobody
> invalid users = root
> unix password sync = yes
> passwd program = /usr/bin/passwd %u
> passwd chat = *Enter\snew\sUNIX\spassword:* %n\n
> *Retype\snew\sUNIX\spassword:* %n\n .
> ; pam password change = no
> socket options = TCP_NODELAY IPTOS_LOWDELAY SO_SNDBUF=8192
> SORCVBUF=8192
> local master = yes
> domain master =yes
>
> #Other stuff ;-))
> domain logons = yes
> hosts allow = 127.0.0.1 192.168.1.0/255.255.255.0
> 192.168.2.0/255.255.255.0 192.168.3.0/255.255.255.0
> logon home = \\%L\%U\.profile
> logon path = \\%L\profile\%U
> logon drive = H:
> logon script = netlogon.bat
>
> [homes]
> comment = Home Directories
> browseable = no
> writable = yes
> create mask = 0700
> directory mask = 0700
>
> [profile]
> path = /home/samba/profile
> writable = yes
> browsable = no
> create mask = 600
> directory mask = 700
>
> # Un-comment the following and create the netlogon directory for
> Domain Logons
> # (you need to configure Samba to act as a domain controller too.)
>
> [netlogon]
> comment = Network Logon Service
> path = /home/samba/netlogon
> read only = yes
> write list = @admin
> guest ok = no
> writable = no
> share modes = no
> browsable = no
> [Tutto]
> path = /mnt/
> writable = yes
> directory mask = 0754
> browseable = yes
> # read only = yes
> guest ok = yes
>
>
> [Condivisa]
> path = /shared/
> writable = yes
> directory mask = 0774
> browseable = yes
> # read only = yes
> guest ok = yes
>
> Help a honest worker!
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