Public bug reported: When running from a clean install with Hardy, All patches downloaded, and a Realtek 8111C nic samab performance was about 2MB/sec. If you run 2 concurrent transfers this performance jumps to around 4.5MB/sec for each transfer.
Using lshw -C network it showed that as default this using the R8169 driver. description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: p...@0000:01:00.0 logical name: eth0 version: 02 serial: 00:30:1b:bd:d8:8c size: 100MB/s capacity: 1GB/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.2LK duplex=full ip=192.168.100.65 latency=0 link=yes module=r8169 multicast=yes port=twisted pair speed=100MB/s After much searching on the forums and finding similar posts (not all linked to the realtek driver. http://ubuntuforums.org/showthread.php?t=424063&highlight=cifs+realtek&page=4 http://ubuntuforums.org/showthread.php?t=723333 Downloading the latest driver from realtek for the r8168 and compiling it, I blacklisted the r8169 driver and insmod'ed the new driver. This fixed the problem. I now get around 7 MB/sec with cifs Now my card appears as description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: p...@0000:01:00.0 logical name: eth0 version: 02 serial: 00:30:1b:bd:d8:8c size: 100MB/s capacity: 1GB/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8168 driverversion=8.010.00-NAPI duplex=full ip=192.168.100.65 latency=0 link=yes module=r8168 multicast=yes port=twisted pair speed=100MB/s I never had a problem with FTP I could get around 10MB/sec. lsb_release -rd Description: Ubuntu 8.04.2 Release: 8.04 Original driver modinfo filename: /lib/modules/2.6.24-23-generic/kernel/drivers/net/r8169.ko version: 2.2LK license: GPL description: RealTek RTL-8169 Gigabit Ethernet driver author: Realtek and the Linux r8169 crew <net...@vger.kernel.org> srcversion: 43B14ECBCCE4F7FF1A8D77E alias: pci:v00000001d00008168sv*sd00002410bc*sc*i* alias: pci:v00001737d00001032sv*sd00000024bc*sc*i* alias: pci:v000016ECd00000116sv*sd*bc*sc*i* alias: pci:v00001259d0000C107sv*sd*bc*sc*i* alias: pci:v00001186d00004300sv*sd*bc*sc*i* alias: pci:v000010ECd00008169sv*sd*bc*sc*i* alias: pci:v000010ECd00008168sv*sd*bc*sc*i* alias: pci:v000010ECd00008167sv*sd*bc*sc*i* alias: pci:v000010ECd00008136sv*sd*bc*sc*i* alias: pci:v000010ECd00008129sv*sd*bc*sc*i* depends: vermagic: 2.6.24-23-generic SMP mod_unload 586 parm: rx_copybreak:Copy breakpoint for copy-only-tiny-frames (int) parm: use_dac:Enable PCI DAC. Unsafe on 32 bit PCI slot. (int) parm: debug:Debug verbosity level (0=none, ..., 16=all) (int) Modinfo for new driver filename: /lib/modules/2.6.24-23-generic/kernel/drivers/net/r8168.ko version: 8.010.00-NAPI license: GPL description: RealTek RTL-8168 Gigabit Ethernet driver author: Realtek and the Linux r8168 crew <net...@vger.kernel.org> srcversion: C79AB52698CA7636CAF3EA4 alias: pci:v000010ECd00008168sv*sd*bc*sc*i* depends: vermagic: 2.6.24-23-generic SMP mod_unload 586 parm: speed:force phy operation. Deprecated by ethtool (8). (array of int) parm: duplex:force phy operation. Deprecated by ethtool (8). (array of int) parm: autoneg:force phy operation. Deprecated by ethtool (8). (array of int) parm: rx_copybreak:Copy breakpoint for copy-only-tiny-frames (int) parm: use_dac:Enable PCI DAC. Unsafe on 32 bit PCI slot. (int) parm: debug:Debug verbosity level (0=none, ..., 16=all) (int) Do you need anymore information? Deano ** Affects: ubuntu Importance: Undecided Status: New -- Terrible Cifs Performance on Hardy with Realtek 8111C NIC https://bugs.launchpad.net/bugs/328431 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs