On 13/11/2006, at 8:23 AM, David Harrison wrote:
Here's a weird one that may have nothing to do with Samba and
more to do with network frame sizes.
I have recently upgraded the network infrastructure to support
gigabit speeds.
- OSX Tiger to OSX Tiger file transfers operate at gigabit speeds.
- Samba 3.0.23C (Suse 10) to OSX Tiger file transfers operate at
gigabit speeds.
- BUT OSX Tiger to Samba 3.0.23C (Suse 10) file transfers operate
at 1-2meg/second which is well down from expected performance.
The strange thing is if I begin a file transfer from OSX Tiger to
Samba and in a terminal window on OSX begin an SCP copy operation
to the same Suse server the file transfer speed of Samba jumps up
to gigabit level speeds. As soon as the SCP copy operation is
stopped the Samba file transfer process drops to 1-2meg/second
again.
Yes I am running 10.4.8 on the clients.
Just as a test I have mounted the Samba volume from the command
line (with mount.cifs and mount.smbfs) and received the same
performance as through the Finder so if the problem is with 10.4.8
its at a fairly low level.
I replaced the network card on the Suse box from the Netgear card
(r8169 driver) to a HP NC1020 (tg3 driver).
Samba performance is now at gigabit levels and is very consistent
with multiple Linux (Suse) and OSX (10.4.8) clients.
The Netgear card appears to operate okay as a Samba client on another
machine but still performs poorly when the Samba process is receiving
large quantities of uploaded data.
David
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