Speed problem - smbclient doesn't send duplicate ACKs in case of pacekt loss

Christopher R. Hertel crh at ubiqx.mn.org
Mon Jan 3 19:41:06 GMT 2005

On Mon, Jan 03, 2005 at 02:19:40PM -0500, David Collier-Brown wrote:
> Christopher R. Hertel wrote:
> >>That sounds genuinely odd!  Samba proper doesn't work at that low
> >>a level, and you already tested with netperf, so I suspect it's
> >>an interaction between Samba and the OS, possibly down at the
> >>netbios/netbuei level...
> >
> >
> >Samba in general and smbclient in particular don't have a netbios/netbeui
> >level.  All of the NBT mapping is done as the packets are built.  This is
> >done in user space, before handing them to the socket for transport.
> Understood: I meant the interaction was with the code that pretended
> to be NBT. 

Hmmm...  but that, in and of itself, shouldn't have any impact on the 
behavior at the TCP layer.  I think the key is the (mostly) 
request/response nature of the protocol, as someone else posted.

Chris -)-----

"Implementing CIFS - the Common Internet FileSystem" ISBN: 013047116X
Samba Team -- http://www.samba.org/     -)-----   Christopher R. Hertel
jCIFS Team -- http://jcifs.samba.org/   -)-----   ubiqx development, uninq.
ubiqx Team -- http://www.ubiqx.org/     -)-----   crh at ubiqx.mn.org
OnLineBook -- http://ubiqx.org/cifs/    -)-----   crh at ubiqx.org

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