Results 1 to 7 of 7

Thread: intensive disk access brings computer to a halt

  1. #1
    Join Date
    Jul 2006
    Location
    on the bleeding edge
    Beans
    1,011

    intensive disk access brings computer to a halt

    I'm having issues with my desktop computer a while back, when the disk starts to access files aggressively, for example when preload is working, the whole responsiveness of the computer comes to a near halt (the cursor stutters when I'm moving it, music playback stutters and general sluggishness). I don't know what causes this since I have 2 Gb RAM, AMD 5000+ X2 and the root partition resides on a raptor disk. I'm using hardy heron 64bit.

    Help would be greatly appriciated.

  2. #2
    Join Date
    May 2007
    Location
    the Netherlands
    Beans
    647
    Distro
    Ubuntu Development Release

    Re: intensive disk access brings computer to a halt

    Does your system have a swap partition? If so, when the system is unresponsive:

    - is there swapping going on perhaps? (You can check with the System Monitor: System-->Administration-->System Monitor-->Resources.)
    - how many ram is being used?
    - are some processes (scrollkeeper or tracker perhaps) taking a lot of resources? (see System Monitor again, or run "top" in a terminal).

  3. #3
    Join Date
    Jul 2006
    Location
    on the bleeding edge
    Beans
    1,011

    Re: intensive disk access brings computer to a halt

    Quote Originally Posted by happyhamster View Post
    Does your system have a swap partition? If so, when the system is unresponsive:

    - is there swapping going on perhaps? (You can check with the System Monitor: System-->Administration-->System Monitor-->Resources.)
    - how many ram is being used?
    - are some processes (scrollkeeper or tracker perhaps) taking a lot of resources? (see System Monitor again, or run "top" in a terminal).
    Thanks for the tip, following it I could see a clear relation between the nasty lags and writing to swap (this happens when RAM reaches 90%+). So I guess the problem could be within the hdparm settings for the swap partition? How do I check that and what should the values be? I'm using SATA connections to my HDs.

  4. #4
    Join Date
    Jul 2006
    Location
    Castrum, Germania Secunda
    Beans
    1,071

    Re: intensive disk access brings computer to a halt

    Possibly this Firefox 3 bug:
    http://ubuntutip.googlepages.com/bugsinubuntu
    Tips, tweaks and how-to's for Ubuntu and Mint:
    http://sites.google.com/site/easylinuxtipsproject
    In for a pleasant surprise? Give Xubuntu a try:
    http://sites.google.com/site/easylin...roject/xubuntu

  5. #5
    Join Date
    Jul 2006
    Location
    on the bleeding edge
    Beans
    1,011

    Re: intensive disk access brings computer to a halt

    Quote Originally Posted by Pjotr123 View Post
    Both nautilus and firefox can eat big chunks of my RAM, but this does not solve my problem since any large write to SWAP will make my system stutter...

  6. #6
    Join Date
    May 2007
    Location
    the Netherlands
    Beans
    647
    Distro
    Ubuntu Development Release

    Re: intensive disk access brings computer to a halt

    - Just a wild guess, but could you show the output of:

    cat /etc/fstab

    - And the output of:

    sudo vol_id /dev/sda1
    sudo vol_id /dev/sda2
    sudo vol_id /dev/sda3
    etc...

    - where /dev/sda... are the partitions listed in fstab. The UUID's found should correspond to the ones in fstab. Be careful if you decide to edit fstab, because making an error could result in an unbootable system. (Make sure you have a live-cd ready for the rescue, for example.)
    Last edited by happyhamster; June 10th, 2008 at 01:02 AM.

  7. #7
    Join Date
    Jul 2006
    Location
    on the bleeding edge
    Beans
    1,011

    Re: intensive disk access brings computer to a halt

    Here's the information you requested:

    Code:
    # /etc/fstab: static file system information.
    #
    # <file system> <mount point>   <type>  <options>       <dump>  <pass>
    proc            /proc           proc    defaults        0       0
    # /dev/sdc1
    UUID=24f83ad6-99a8-4c83-919c-5cf4cdf84f3a /               ext3    errors=remount-ro 0       1
    # /dev/sdc2
    UUID=1bbea7f0-2062-4e05-8362-492cd68b8740 /home           ext3    defaults        0       2
    # /dev/sda1
    UUID=3ED5E20743B012AC /media/sda1     ntfs    defaults,umask=007,gid=46 0       1
    # /dev/sda3
    #UUID=1fc76122-2dc6-42b5-97ca-8b08b390c1f8 /media/sda3     reiserfs    defaults        0       2
    # /dev/sdb1
    UUID=11475f8d-dbfd-43c7-bfc6-d1447724fa28 /media/sdb1     ext3    defaults        0       2
    # /dev/sda5
    UUID=b1142981-d368-48f2-9b36-8ae01ab0dc85 none            swap    sw              0       0
    /dev/hdc        /media/cdrom0   udf,iso9660 user,noauto,exec,utf8 0       0



    sudo vol_id /dev/sdc1 (06-10 10:12)
    ID_FS_USAGE=filesystem
    ID_FS_TYPE=ext3
    ID_FS_VERSION=1.0
    ID_FS_UUID=24f83ad6-99a8-4c83-919c-5cf4cdf84f3a
    ID_FS_UUID_ENC=24f83ad6-99a8-4c83-919c-5cf4cdf84f3a
    ID_FS_LABEL=
    ID_FS_LABEL_ENC=
    ID_FS_LABEL_SAFE=


    sudo vol_id /dev/sdc2 (06-10 10:16)
    ID_FS_USAGE=filesystem
    ID_FS_TYPE=ext3
    ID_FS_VERSION=1.0
    ID_FS_UUID=1bbea7f0-2062-4e05-8362-492cd68b8740
    ID_FS_UUID_ENC=1bbea7f0-2062-4e05-8362-492cd68b8740
    ID_FS_LABEL=
    ID_FS_LABEL_ENC=
    ID_FS_LABEL_SAFE=

    sudo vol_id /dev/sda1 (06-10 10:30)
    ID_FS_USAGE=filesystem
    ID_FS_TYPE=ntfs
    ID_FS_VERSION=3.1
    ID_FS_UUID=3ED5E20743B012AC
    ID_FS_UUID_ENC=3ED5E20743B012AC
    ID_FS_LABEL=dozey
    ID_FS_LABEL_ENC=dozey
    ID_FS_LABEL_SAFE=dozey

    sudo vol_id /dev/sda3 (06-10 10:30)
    ID_FS_USAGE=filesystem
    ID_FS_TYPE=reiserfs
    ID_FS_VERSION=3.6
    ID_FS_UUID=ec536297-1a91-45fb-b4c7-f80c9ac25297
    ID_FS_UUID_ENC=ec536297-1a91-45fb-b4c7-f80c9ac25297
    ID_FS_LABEL=
    ID_FS_LABEL_ENC=
    ID_FS_LABEL_SAFE=

    sudo vol_id /dev/sda5 (06-10 10:30)
    ID_FS_USAGE=other
    ID_FS_TYPE=swap
    ID_FS_VERSION=2
    ID_FS_UUID=b1142981-d368-48f2-9b36-8ae01ab0dc85
    ID_FS_UUID_ENC=b1142981-d368-48f2-9b36-8ae01ab0dc85
    ID_FS_LABEL=
    ID_FS_LABEL_ENC=
    ID_FS_LABEL_SAFE=

    sudo vol_id /dev/sdb1 (06-10 10:30)
    ID_FS_USAGE=filesystem
    ID_FS_TYPE=ext3
    ID_FS_VERSION=1.0
    ID_FS_UUID=11475f8d-dbfd-43c7-bfc6-d1447724fa28
    ID_FS_UUID_ENC=11475f8d-dbfd-43c7-bfc6-d1447724fa28
    ID_FS_LABEL=ext3storage
    ID_FS_LABEL_ENC=ext3storage
    ID_FS_LABEL_SAFE=ext3storage

    As you can see, they all have the correct UUIDs in fstab except for sda3 - which also is commented out fstab. I've also taken the output of fdisk -l in case it might be of any use:

    Code:
    Disk /dev/sda: 250.0 GB, 250059350016 bytes
    255 heads, 63 sectors/track, 30401 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0xcab10bee
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sda1   *           1        3713    29824641    7  HPFS/NTFS
    /dev/sda2           29490       30401     7325640    c  W95 FAT32 (LBA)
    /dev/sda3            3714       28732   200965117+  83  Linux
    /dev/sda4           28733       29489     6080602+   5  Extended
    /dev/sda5           28733       29489     6080571   82  Linux swap / Solaris
    
    Partition table entries are not in disk order
    
    Disk /dev/sdb: 250.0 GB, 250059350016 bytes
    255 heads, 63 sectors/track, 30401 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0x480b5154
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sdb1               1       30401   244196001   83  Linux
    
    Disk /dev/sdc: 74.3 GB, 74355769344 bytes
    255 heads, 63 sectors/track, 9039 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0xdda1dda1
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sdc1            2962        9039    48821535   83  Linux
    /dev/sdc2             166        2961    22458870   83  Linux
    
    Partition table entries are not in disk order
    Thanks in advance for help.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •