[Samba] smb2 vs. NT1
tompos at martos.bme.hu
Mon Feb 25 12:35:26 MST 2013
On 02/25/2013 07:29 PM, Jeremy Allison wrote:
> On Mon, Feb 25, 2013 at 09:38:51AM +0100, Papp Tamas wrote:
>> hi All,
>> We have a glusterfs cluster with 5 nodes on Ubuntu 12.04 amd64.
>> We use this smb.conf:
>> socket options = IPTOS_THROUGHPUT TCP_NODELAY IPTOS_LOWDELAY SO_SNDBUF=131072 SO_RCVBUF=131072
> Remove the above line. It's pure voodoo. Don't second
> guess the kernel w.r.t. socket options.
It seems, you're right. However in this case the documentation in default smb.conf is wrong.
# Most people will find that this option gives better performance.
# See smb.conf(5) and /usr/share/doc/samba-doc/htmldocs/Samba3-HOWTO/speed.html
# for details
# You may want to add the following on a Linux system:
# SO_RCVBUF=8192 SO_SNDBUF=8192
# socket options = TCP_NODELAY
Now this is the config:
read raw = yes
server string = %h
write raw = yes
max xmit = 131072
dead time = 15
getwd cache = yes
block size = 131072
load printers = no
wins support = no
local master = no
wins server = 192.168.3.7
veto files = /.AppleDouble/
delete veto files = yes
hide dot files = yes
printing = BSD
max protocol = SMB2
min protocol = SMB2
path = /W/Projects
browseable = yes
public = yes
guest ok = yes
read only = no
force user = user
force group = user
And it's much better now:)
> That will be due to the async requests that the Windows SMB2
> redirector uses much more than the SMB1 redirector.
>> This is from man page:
>> NT1: Current up to date version of the protocol. Used by Windows NT. Known as CIFS.
>> SMB2: Re-implementation of the SMB protocol. Used by Windows Vista
>> and newer. The Samba implementation of SMB2 is currently marked
> SMB2 in Samba is fully supported from Samba 3.6.0 onwards.
> It was "experimental" (read, didn't really work :-) in
> 3.5.x and below.
OK, thanks for the answer and thanks so much for the tuning tips.
Every single samba tuning guide starts with that options!
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