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Thread: "Connection Timed Out" when transferring about 2GB+ of data over network?

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    "Connection Timed Out" when transferring data over network? (Out of SW-IOMMU)

    I just installed 13.04 64 bit on my desktop and laptop using the 2/27 daily image. I have Ubuntu Server 12.04.2 running on my server here. On both my laptop and desktop, I tried to copy a folder several GB in size over to my server. I tried to copy this file through Samba in Nautilus as well as with rsync over SSH. In both instances, it locked up right around the 2.0 to 2.3 GB area. Each system lost connection at this point, forcing a reboot. In one case with my laptop, I left it sit for about 10 minutes and came back to it. At this time pings were working again.

    Any of you guys out there available to give this a shot? All I did was try to copy something over 2.3 GB in size to my server. Like I said, Samba and Rsync both exhibited the same behavior, along with wired desktop vs wireless laptop.


    EDIT - dmesg output from desktop when the problem hit. I was spamming dmesg over and over. Once the issue turned up is when the DMA lines appeared:

    Code:
    [    3.918858] input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input7
    [    3.918944] input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input8
    [    3.919017] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input9
    [    3.919073] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input10
    [    3.947169] init: udev-fallback-graphics main process (946) terminated with status 1
    [    4.968540] init: failsafe main process (987) killed by TERM signal
    [    4.981107] Bluetooth: Core ver 2.16
    [    4.981129] NET: Registered protocol family 31
    [    4.981130] Bluetooth: HCI device and connection manager initialized
    [    4.981184] Bluetooth: HCI socket layer initialized
    [    4.981187] Bluetooth: L2CAP socket layer initialized
    [    4.981192] Bluetooth: SCO socket layer initialized
    [    4.986657] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
    [    4.986661] Bluetooth: BNEP filters: protocol multicast
    [    4.986668] Bluetooth: BNEP socket layer initialized
    [    4.987832] Bluetooth: RFCOMM TTY layer initialized
    [    4.987843] Bluetooth: RFCOMM socket layer initialized
    [    4.987844] Bluetooth: RFCOMM ver 1.11
    [    4.999846] type=1400 audit(1362030386.924:5): apparmor="STATUS" operation="profile_load" name="/usr/lib/cups/backend/cups-pdf" pid=1079 comm="apparmor_parser"
    [    5.000839] type=1400 audit(1362030386.924:6): apparmor="STATUS" operation="profile_load" name="/usr/sbin/cupsd" pid=1079 comm="apparmor_parser"
    [    5.017141] type=1400 audit(1362030386.940:7): apparmor="STATUS" operation="profile_load" name="/usr/lib/lightdm/lightdm/lightdm-guest-session-wrapper" pid=1110 comm="apparmor_parser"
    [    5.017152] type=1400 audit(1362030386.940:8): apparmor="STATUS" operation="profile_load" name="/usr/lib/x86_64-linux-gnu/lightdm-remote-session-freerdp/freerdp-session-wrapper" pid=1111 comm="apparmor_parser"
    [    5.017347] type=1400 audit(1362030386.940:9): apparmor="STATUS" operation="profile_load" name="/usr/lib/x86_64-linux-gnu/lightdm-remote-session-uccsconfigure/uccsconfigure-session-wrapper" pid=1112 comm="apparmor_parser"
    [    5.017399] type=1400 audit(1362030386.940:10): apparmor="STATUS" operation="profile_load" name="/usr/lib/x86_64-linux-gnu/lightdm-remote-session-freerdp/freerdp-session-wrapper//chromium_browser" pid=1111 comm="apparmor_parser"
    [    5.036613] atl1c 0000:05:00.0: irq 54 for MSI/MSI-X
    [    5.037121] atl1c 0000:05:00.0: atl1c: eth0 NIC Link is Up<1000 Mbps Full Duplex>
    [    9.898041] input: Logitech Unifying Device. Wireless PID:1024 as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.6/2-1.6:1.2/0003:046D:C52B.0003/input/input11
    [    9.898799] logitech-djdevice 0003:046D:C52B.0004: input,hidraw1: USB HID v1.11 Mouse [Logitech Unifying Device. Wireless PID:1024] on usb-0000:00:1d.0-1.6:1
    [    9.900091] input: Logitech Unifying Device. Wireless PID:2011 as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.6/2-1.6:1.2/0003:046D:C52B.0003/input/input12
    [    9.900212] logitech-djdevice 0003:046D:C52B.0005: input,hidraw2: USB HID v1.11 Keyboard [Logitech Unifying Device. Wireless PID:2011] on usb-0000:00:1d.0-1.6:2
    [ 1022.072341] DMA: Out of SW-IOMMU space for 30968 bytes at device 0000:05:00.0
    [ 1022.076694] DMA: Out of SW-IOMMU space for 30968 bytes at device 0000:05:00.0
    [ 1022.080899] DMA: Out of SW-IOMMU space for 13592 bytes at device 0000:05:00.0
    [ 1022.536781] DMA: Out of SW-IOMMU space for 7240 bytes at device 0000:05:00.0
    [ 1022.783313] DMA: Out of SW-IOMMU space for 7240 bytes at device 0000:05:00.0
    [ 1023.031361] DMA: Out of SW-IOMMU space for 7240 bytes at device 0000:05:00.0
    [ 1023.280154] DMA: Out of SW-IOMMU space for 7240 bytes at device 0000:05:00.0
    [ 1023.526582] DMA: Out of SW-IOMMU space for 6680 bytes at device 0000:05:00.0
    [ 1023.776287] DMA: Out of SW-IOMMU space for 7240 bytes at device 0000:05:00.0
    [ 1024.023317] DMA: Out of SW-IOMMU space for 6352 bytes at device 0000:05:00.0
    [ 1024.267164] DMA: Out of SW-IOMMU space for 5792 bytes at device 0000:05:00.0
    [ 1024.475257] DMA: Out of SW-IOMMU space for 4344 bytes at device 0000:05:00.0
    [ 1024.684636] DMA: Out of SW-IOMMU space for 4344 bytes at device 0000:05:00.0
    [ 1024.926598] DMA: Out of SW-IOMMU space for 4344 bytes at device 0000:05:00.0
    [ 1025.135775] DMA: Out of SW-IOMMU space for 4344 bytes at device 0000:05:00.0
    [ 1025.339428] DMA: Out of SW-IOMMU space for 4344 bytes at device 0000:05:00.0
    [ 1025.543224] DMA: Out of SW-IOMMU space for 4344 bytes at device 0000:05:00.0
    [ 1025.747944] DMA: Out of SW-IOMMU space for 4344 bytes at device 0000:05:00.0
    [ 1025.990350] DMA: Out of SW-IOMMU space for 4344 bytes at device 0000:05:00.0
    [ 1026.201231] DMA: Out of SW-IOMMU space for 4344 bytes at device 0000:05:00.0
    [ 1026.405181] DMA: Out of SW-IOMMU space for 4344 bytes at device 0000:05:00.0
    [ 1026.646002] DMA: Out of SW-IOMMU space for 1522 bytes at device 0000:05:00.0
    [ 1026.648540] DMA: Out of SW-IOMMU space for 4344 bytes at device 0000:05:00.0


    EDIT - For what it's worth, I just used my same problematic 13.04 laptop to push 40GB of data to a 12.04 system I have here via Samba/Nautilus. No issues at all. I wonder why on earth I ran in to any issues last night then with my laptop AND desktop pushing data to my server...

    EDIT II - Some additional reading has suggested this is a kernel issue of some sort. I read about several bugs and also bumped up a recent one (actually it was posted in 2009, but continually bumped up over the years.... nice.....). Hopefully we'll see a fix soon.
    Last edited by cariboo; March 2nd, 2013 at 06:13 AM. Reason: added code tags
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