Apple OS X SMB issues across VPN

David Collier-Brown David.Collier-Brown at Sun.COM
Wed Dec 14 13:26:34 GMT 2005

   The red hat Samba did not suffer this performance hit, so
it's not likely to be a SMB protocol issue as such, more
a issue with the implementatons on the two OSs.
   I suspect it has **something** to do with latency,
as the flow graph in ethereal looks like a stairwell (;-))

   Dan, could we have a new packet capture from the OS-X
server now the VPN issue is fixed?  It should be as close
as possible to the exact same user scenario as before.


Christopher R. Hertel wrote:
> On Tue, Dec 13, 2005 at 01:17:13PM -0700, Dan Tappin wrote:
>>Just an update.  I have managed to resolve a few issues.  I think I  
>>am back to a samba issue though.
>>ISP Issues:
>>I had an unknown duplex issue with my ISP.  I have 10-half at the VPN  
>>site and 10-full here.
> Cool.  That's one down.  :)
>>SMB Issues:
>>I have run a few tests and I can get ~ 6MB/s to both my Xserve and my  
>>test RH SMB servers on the local LAN.  I have played with all the  
>>smb.conf options and there does not seem to be any difference at  
>>least for the smbclient.  I need to run real world performance tests  
>>on my varies local Windows clients (98, 2K and XP).
>>The VPN smbclient transfers are another story.  I can only manage ~  
>>150 kB/s.  This is from the RH server at that location via  
>>smbclient.  A wget transfer can get 400+ kB/s via http.  It's not  
>>apples to apples but a good indiaction that something is not right on  
>>the samba side.
> Not necessarily.  HTTP is less susceptible to latency issues than SMB.  
> It would be good to test the same clients against a Windows server over
> the same connection to see if Windows is any faster.  If not, then it's 
> time to look more closely at those packets again.
> Sorry I haven't had time for that.  Life has gotten in the way.
> Chris -)-----

David Collier-Brown,      | Always do right. This will gratify
Sun Microsystems, Toronto | some people and astonish the rest
davecb at     |                      -- Mark Twain
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