On 11/14/06, David Harrison <[EMAIL PROTECTED]> wrote:
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.
Thanks for the info... I am a little surprised as we have never had that kind of problem with the r8169 cards. I do have some tg3 nics (broadcomm chip) and actually my current pc has this chip. At work we have ~10 of these as they come on several of the amd opteron servers with TYAN motherboards we have. I do admit that this chip is a better performer than the r8169 as I have benchmarked them at 950Mbit with netperf without jumbo frames and through 2 netgear switches but I attributed that to the fact that on the amd boards the nic is connected to the PCI-X bus and not the 32 bit 33Mhz PCI bus and the r8169 cards we have are only pci. John -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
