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.
"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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