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Thread: Slow File Operations (Read/Write) and slow Network

  1. #1
    Join Date
    Jun 2007
    Marion, IA
    Ubuntu 12.04 Precise Pangolin

    Slow File Operations (Read/Write) and slow Network

    I'm not sure what is causing this new problem yet so I figured I'd post it here to see if anybody else is having the same problem. I have not experienced these problems before, this is a new and recent occurrence which started within the last week or so.

    All of a sudden I am getting slow transfers and reads to/from my ubuntu box. File operations are going around 600-700 k/s when they previously were going 30+ Mb/s.

    Here are some things I am now experiencing (didn't before):
    • Slow network file transfers (local and remote) with samba or SFTP
    • Slow browsing of my samba share on my windows box, slow directory refresh times
    • PS3 Mediaserver is lagging and the video is glitching (if it would actually play)

    Is anybody else seeing these same symptoms as I am???? Maybe a recent update or kernel update has caused this to happen?? Again, these problems didn't start happening until this past week.

    I am running Ubuntu 12.04 LTS:

    xxxx@xxxx:~$ lsb_release -a
    No LSB modules are available.
    Distributor ID: Ubuntu
    Description:    Ubuntu 12.04.3 LTS
    Release:        12.04
    Codename:       precise
    RAID-6 Array is in normal operation:

    xxxx@xxxx:~$ sudo mdadm --detail /dev/md0
            Version : 1.2
      Creation Time : Sat Jun  8 00:10:38 2013
         Raid Level : raid6
         Array Size : 17580801024 (16766.36 GiB 18002.74 GB)
      Used Dev Size : 2930133504 (2794.39 GiB 3000.46 GB)
       Raid Devices : 8
      Total Devices : 8
        Persistence : Superblock is persistent
        Update Time : Mon Nov 18 07:41:07 2013
              State : clean
     Active Devices : 8
    Working Devices : 8
     Failed Devices : 0
      Spare Devices : 0
             Layout : left-symmetric
         Chunk Size : 512K
               Name : xxxx:0  (local to host xxxx)
               UUID : e102e4b7:a00d0615:1cb38620:3cfad34a
             Events : 85
        Number   Major   Minor   RaidDevice State
           0       8       17        0      active sync   /dev/sdb1
           1       8       33        1      active sync   /dev/sdc1
           2       8       49        2      active sync   /dev/sdd1
           3       8       65        3      active sync   /dev/sde1
           4       8       81        4      active sync   /dev/sdf1
           5       8       97        5      active sync   /dev/sdg1
           6       8      113        6      active sync   /dev/sdh1
           7       8      129        7      active sync   /dev/sdi1

  2. #2
    Join Date
    Sep 2008
    Ubuntu 12.04 Precise Pangolin

    Re: Slow File Operations (Read/Write) and slow Network

    For all drives:
    smartctl -a /dev/sda
    A disk might be dying.

    Did you test the speed locally?

  3. #3
    Join Date
    Jun 2007
    Marion, IA
    Ubuntu 12.04 Precise Pangolin

    Re: Slow File Operations (Read/Write) and slow Network

    I have not had the chance to test locally, but that was on my list to try tonight. Will do that and report back.

    Full SMART Report from all 9 disks are linked below. Doesn't look like that anything is starting to fail. Do you notice anything SaturnusDJ?

    /dev/sda : (root drive ; SSD)
    /dev/sdb :
    /dev/sdc :
    /dev/sdd :
    /dev/sde :
    /dev/sdf :
    /dev/sdg :
    /dev/sdh :
    /dev/sdi :

  4. #4
    Join Date
    Sep 2008
    Ubuntu 12.04 Precise Pangolin

    Re: Slow File Operations (Read/Write) and slow Network

    Looks fine to me.

  5. #5
    Join Date
    Jun 2007
    Marion, IA
    Ubuntu 12.04 Precise Pangolin

    Re: Slow File Operations (Read/Write) and slow Network

    Ok, I have determined that the transfers locally to and from my RAID array or my root drive are not having issues. 50-75 mb/s (normal speed) is what I'm seeing.

    SERVER --> CLIENT is slow (25-150 kb/s)
    CLIENT --> SERVER is NOT slow 50-75 mb/s (normal speed)

    Still investigating but I'm guessing a recent update broke this as I have not touched this file server except updates.


    Below are the results of the iperf tests I ran:

    Server to Client (Win 7) - 321 Kbits/sec
    Client (Win 7) to Server - 358 Mbits/sec

    sudo lshw -C network:

    xxxx@xxxx:~$ sudo lshw -C network
           description: Ethernet interface
           product: 82574L Gigabit Network Connection
           vendor: Intel Corporation
           physical id: 0
           bus info: pci@0000:04:00.0
           logical name: eth0
           version: 00
           serial: 60:a4:xx:xx:xx:x5
           size: 1Gbit/s
           capacity: 1Gbit/s
           width: 32 bits
           clock: 33MHz
           capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
           configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.0.0-k duplex=full firmware=2.1-3 ip= latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
           resources: irq:17 memory:f7d00000-f7d1ffff ioport:d000(size=32) memory:f7d20000-f7d23fff
    sudo modinfo e1000e:

    xxxxx@xxxxx:~$ sudo modinfo e1000e
    filename:       /lib/modules/3.5.0-43-generic/kernel/drivers/net/ethernet/intel/e1000e/e1000e.ko
    version:        2.0.0-k
    license:        GPL
    description:    Intel(R) PRO/1000 Network Driver
    author:         Intel Corporation, <>
    srcversion:     8BE4A65E2266A2193761AAA
    alias:          pci:v00008086d00001559sv*sd*bc*sc*i*
    alias:          pci:v00008086d0000155Asv*sd*bc*sc*i*
    alias:          pci:v00008086d0000153Bsv*sd*bc*sc*i*
    alias:          pci:v00008086d0000153Asv*sd*bc*sc*i*
    alias:          pci:v00008086d00001503sv*sd*bc*sc*i*
    alias:          pci:v00008086d00001502sv*sd*bc*sc*i*
    alias:          pci:v00008086d000010F0sv*sd*bc*sc*i*
    alias:          pci:v00008086d000010EFsv*sd*bc*sc*i*
    alias:          pci:v00008086d000010EBsv*sd*bc*sc*i*
    alias:          pci:v00008086d000010EAsv*sd*bc*sc*i*
    alias:          pci:v00008086d00001525sv*sd*bc*sc*i*
    alias:          pci:v00008086d000010DFsv*sd*bc*sc*i*
    alias:          pci:v00008086d000010DEsv*sd*bc*sc*i*
    alias:          pci:v00008086d000010CEsv*sd*bc*sc*i*
    alias:          pci:v00008086d000010CDsv*sd*bc*sc*i*
    alias:          pci:v00008086d000010CCsv*sd*bc*sc*i*
    alias:          pci:v00008086d000010CBsv*sd*bc*sc*i*
    alias:          pci:v00008086d000010F5sv*sd*bc*sc*i*
    alias:          pci:v00008086d000010BFsv*sd*bc*sc*i*
    alias:          pci:v00008086d000010E5sv*sd*bc*sc*i*
    alias:          pci:v00008086d0000294Csv*sd*bc*sc*i*
    alias:          pci:v00008086d000010BDsv*sd*bc*sc*i*
    alias:          pci:v00008086d000010C3sv*sd*bc*sc*i*
    alias:          pci:v00008086d000010C2sv*sd*bc*sc*i*
    alias:          pci:v00008086d000010C0sv*sd*bc*sc*i*
    alias:          pci:v00008086d00001501sv*sd*bc*sc*i*
    alias:          pci:v00008086d00001049sv*sd*bc*sc*i*
    alias:          pci:v00008086d0000104Dsv*sd*bc*sc*i*
    alias:          pci:v00008086d0000104Bsv*sd*bc*sc*i*
    alias:          pci:v00008086d0000104Asv*sd*bc*sc*i*
    alias:          pci:v00008086d000010C4sv*sd*bc*sc*i*
    alias:          pci:v00008086d000010C5sv*sd*bc*sc*i*
    alias:          pci:v00008086d0000104Csv*sd*bc*sc*i*
    alias:          pci:v00008086d000010BBsv*sd*bc*sc*i*
    alias:          pci:v00008086d00001098sv*sd*bc*sc*i*
    alias:          pci:v00008086d000010BAsv*sd*bc*sc*i*
    alias:          pci:v00008086d00001096sv*sd*bc*sc*i*
    alias:          pci:v00008086d0000150Csv*sd*bc*sc*i*
    alias:          pci:v00008086d000010F6sv*sd*bc*sc*i*
    alias:          pci:v00008086d000010D3sv*sd*bc*sc*i*
    alias:          pci:v00008086d0000109Asv*sd*bc*sc*i*
    alias:          pci:v00008086d0000108Csv*sd*bc*sc*i*
    alias:          pci:v00008086d0000108Bsv*sd*bc*sc*i*
    alias:          pci:v00008086d0000107Fsv*sd*bc*sc*i*
    alias:          pci:v00008086d0000107Esv*sd*bc*sc*i*
    alias:          pci:v00008086d0000107Dsv*sd*bc*sc*i*
    alias:          pci:v00008086d000010B9sv*sd*bc*sc*i*
    alias:          pci:v00008086d000010D5sv*sd*bc*sc*i*
    alias:          pci:v00008086d000010DAsv*sd*bc*sc*i*
    alias:          pci:v00008086d000010D9sv*sd*bc*sc*i*
    alias:          pci:v00008086d00001060sv*sd*bc*sc*i*
    alias:          pci:v00008086d000010A5sv*sd*bc*sc*i*
    alias:          pci:v00008086d000010BCsv*sd*bc*sc*i*
    alias:          pci:v00008086d000010A4sv*sd*bc*sc*i*
    alias:          pci:v00008086d0000105Fsv*sd*bc*sc*i*
    alias:          pci:v00008086d0000105Esv*sd*bc*sc*i*
    intree:         Y
    vermagic:       3.5.0-43-generic SMP mod_unload modversions
    parm:           debug:Debug level (0=none,...,16=all) (int)
    parm:           eeprom_bad_csum_allow:Allow bad EEPROM checksums (int)
    parm:           copybreak:Maximum size of packet that is copied to a new buffer on receive (uint)
    parm:           TxIntDelay:Transmit Interrupt Delay (array of int)
    parm:           TxAbsIntDelay:Transmit Absolute Interrupt Delay (array of int)
    parm:           RxIntDelay:Receive Interrupt Delay (array of int)
    parm:           RxAbsIntDelay:Receive Absolute Interrupt Delay (array of int)
    parm:           InterruptThrottleRate:Interrupt Throttling Rate (array of int)
    parm:           IntMode:Interrupt Mode (array of int)
    parm:           SmartPowerDownEnable:Enable PHY smart power down (array of int)
    parm:           KumeranLockLoss:Enable Kumeran lock loss workaround (array of int)
    parm:           WriteProtectNVM:Write-protect NVM [WARNING: disabling this can lead to corrupted NVM] (array of int)
    parm:           CrcStripping:Enable CRC Stripping, disable if your BMC needs the CRC (array of int)
    Last edited by sondo2121; November 19th, 2013 at 05:16 AM.


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