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Thread: Disk activity about every two seconds.

  1. #1
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    Default Disk activity about every two seconds.

    I have something that is poling my hard drive about every two seconds. It's really not necessary I don't think. I am not sure how to find out what process it is. My memory usage is pretty low and I am not using any swap.

    How do I go about tracking the culprit down?

    KDE 4.4 11.3 latest kernel.
    Tumbleweed

  2. #2
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    Smile Re: Disk activity about every two seconds.

    I normally run the System Monitor (ksysguard, from KDE) to track down the culprit, but suspects are Tracker (You can search YaST / Software Management for this one) and Nepomuk (Enabled in KDE Personnel Settings for Desktop Search). I normally uninstall Tracker if it is Loaded and disable Nepomuk if you use the KDE desktop. If not these, then perhaps the System monitor will tell the story.

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

  3. #3
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    Default Re: Disk activity about every two seconds.

    Check the I/O usage with

    Code:
    iotop

  4. #4
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    Default Re: Disk activity about every two seconds.

    On Tue, 19 Oct 2010 05:36:01 +0530, jdmcdaniel3
    <jdmcdaniel3@no-mx.forums.opensuse.org> wrote:

    > I normally run the System Monitor (ksysguard, from KDE) to track down
    > the culprit, but suspects are Tracker (You can search YaST / Software
    > Management for this one) and Nepomuk (Enabled in KDE Personnel Settings
    > for Desktop Search). I normally uninstall Tracker if it is Loaded and
    > disable Nepomuk if you use the KDE desktop. If not these, then perhaps
    > the System monitor will tell the story.


    i often find top or htop more accurate than ksysguard. but at times i
    notice unusual high CPU load in plasma's "system load viewer" applet (KDE
    4.5.2, factory), but ksysguard shows only very little CPU use. starting
    htop in a terminal however pins down the process.

    recently i found nepomukservice/file watcher getting stuck with 100% of
    one CPU; when i killed the process it re-started and used only very little
    CPU. that may be because i'm using KDE factory, which is a little more in
    flux, of course. but i've noticed this earlier too, before switching to
    factory again, that processes belonging to not fully stable services like
    nepomuk & co need killing once in a while.

    --
    phani.

  5. #5
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    Default Re: Disk activity about every two seconds.

    On Tue, 19 Oct 2010 05:36:01 +0530, jdmcdaniel3
    <jdmcdaniel3@no-mx.forums.opensuse.org> wrote:

    > I normally run the System Monitor (ksysguard, from KDE) to track down
    > the culprit, but suspects are Tracker (You can search YaST / Software
    > Management for this one) and Nepomuk (Enabled in KDE Personnel Settings
    > for Desktop Search). I normally uninstall Tracker if it is Loaded and
    > disable Nepomuk if you use the KDE desktop. If not these, then perhaps
    > the System monitor will tell the story.


    i often find top or htop more accurate than ksysguard. but at times i
    notice unusual high CPU load in plasma's "system load viewer" applet (KDE
    4.5.2, factory), but ksysguard shows only very little CPU use. starting
    htop in a terminal however pins down the process.

    recently i found nepomukservice/file watcher getting stuck with 100% of
    one CPU; when i killed the process it re-started and used only very little
    CPU. that may be because i'm using KDE factory, which is a little more in
    flux, of course. but i've noticed this earlier too, before switching to
    factory again, that processes belonging to not fully stable services like
    nepomuk & co need killing once in a while.

    --
    phani.

  6. #6
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    Default Re: Disk activity about every two seconds.

    htop and iotop do not seem to be installed. top doesn't show any process that coincides with the disk activity light. Just a glimpse frozen in time.

    Code:
      44 root      20   0     0    0    0 S    0  0.0   1:00.45 kondemand/3                                                                                                  
     3201 flamebai  20   0  254m  28m  14m S    0  0.7  23:58.38 xchat                                                                                                        
    12065 flamebai  20   0  373m  27m  15m S    0  0.7   0:00.32 konsole                                                                                                      
    17394 flamebai  20   0  707m 170m  32m S    0  4.3   7:31.27 firefox                                                                                                      
        1 root      20   0 12408  764  616 S    0  0.0   0:02.67 init                                                                                                         
        2 root      20   0     0    0    0 S    0  0.0   0:00.00 kthreadd                                                                                                     
        3 root      RT   0     0    0    0 S    0  0.0   0:00.21 migration/0                                                                                                  
        4 root      20   0     0    0    0 S    0  0.0   0:06.47 ksoftirqd/0                                                                                                  
        5 root      RT   0     0    0    0 S    0  0.0   0:00.00 watchdog/0                                                                                                   
        6 root      RT   0     0    0    0 S    0  0.0   0:00.21 migration/1                                                                                                  
        7 root      20   0     0    0    0 S    0  0.0   0:04.88 ksoftirqd/1                                                                                                  
        8 root      RT   0     0    0    0 S    0  0.0   0:00.00 watchdog/1                                                                                                   
        9 root      RT   0     0    0    0 S    0  0.0   0:00.18 migration/2                                                                                                  
       10 root      20   0     0    0    0 S    0  0.0   0:03.82 ksoftirqd/2                                                                                                  
       11 root      RT   0     0    0    0 S    0  0.0   0:00.00 watchdog/2                                                                                                   
       12 root      RT   0     0    0    0 S    0  0.0   0:00.10 migration/3                                                                                                  
       13 root      20   0     0    0    0 S    0  0.0   0:05.87 ksoftirqd/3                                                                                                  
       14 root      RT   0     0    0    0 S    0  0.0   0:00.00 watchdog/3                                                                                                   
       15 root      20   0     0    0    0 S    0  0.0   0:09.26 events/0                                                                                                     
       16 root      20   0     0    0    0 S    0  0.0   0:08.53 events/1                                                                                                     
       17 root      20   0     0    0    0 S    0  0.0   0:08.96 events/2                                                                                                     
       18 root      20   0     0    0    0 S    0  0.0   0:13.39 events/3                                                                                                     
       19 root      20   0     0    0    0 S    0  0.0   0:00.00 netns                                                                                                        
       20 root      20   0     0    0    0 S    0  0.0   0:00.00 async/mgr                                                                                                    
       21 root      20   0     0    0    0 S    0  0.0   0:00.00 pm                                                                                                           
       22 root      20   0     0    0    0 S    0  0.0   0:00.35 sync_supers                                                                                                  
       23 root      20   0     0    0    0 S    0  0.0   0:00.44 bdi-default                                                                                                  
       24 root      20   0     0    0    0 S    0  0.0   0:00.00 kintegrityd/0                                                                                                
       25 root      20   0     0    0    0 S    0  0.0   0:00.00 kintegrityd/1                                                                                                
       26 root      20   0     0    0    0 S    0  0.0   0:00.00 kintegrityd/2                                                                                                
       27 root      20   0     0    0    0 S    0  0.0   0:00.00 kintegrityd/3                                                                                                
       28 root      20   0     0    0    0 S    0  0.0   0:00.87 kblockd/0                                                                                                    
       29 root      20   0     0    0    0 S    0  0.0   0:00.21 kblockd/1                                                                                                    
       30 root      20   0     0    0    0 S    0  0.0   0:00.18 kblockd/2                                                                                                    
       31 root      20   0     0    0    0 S    0  0.0   0:00.08 kblockd/3                                                                                                    
       32 root      20   0     0    0    0 S    0  0.0   0:00.00 kacpid                                                                                                       
       33 root      20   0     0    0    0 S    0  0.0   0:00.00 kacpi_notify                                                                                                 
       34 root      20   0     0    0    0 S    0  0.0   0:00.00 kacpi_hotplug                                                                                                
       35 root      20   0     0    0    0 S    0  0.0   0:00.02 khubd                                                                                                        
       36 root      20   0     0    0    0 S    0  0.0   0:00.00 kseriod                                                                                                      
       41 root      20   0     0    0    0 S    0  0.0   2:02.55 kondemand/0                                                                                                  
       42 root      20   0     0    0    0 S    0  0.0   1:44.11 kondemand/1                                                                                                  
       43 root      20   0     0    0    0 S    0  0.0   1:15.92 kondemand/2                                                                                                  
       78 root      20   0     0    0    0 S    0  0.0   0:00.00 khelper
    Tumbleweed

  7. #7
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    Default Re: Disk activity about every two seconds.

    Quote Originally Posted by jdmcdaniel3 View Post
    I normally run the System Monitor (ksysguard, from KDE) to track down the culprit, but suspects are Tracker (You can search YaST / Software Management for this one) and Nepomuk (Enabled in KDE Personnel Settings for Desktop Search). I normally uninstall Tracker if it is Loaded and disable Nepomuk if you use the KDE desktop. If not these, then perhaps the System monitor will tell the story.

    Thank You,
    Nepomuk is already off and Tracker is not installed.
    Tumbleweed

  8. #8
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    Default Re: Disk activity about every two seconds.

    htop and iotop do not seem to be installed.
    Code:
    zypper in htop iotop

  9. #9
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    Default Re: Disk activity about every two seconds.

    FlameBait wrote:
    > htop and iotop do not seem to be installed.


    i think both are easily installed from the standard repo..

    --
    DenverD
    When it comes to chocolate, resistance is futile.
    CAVEAT: http://is.gd/bpoMD [posted via NNTP w/openSUSE 10.3]

  10. #10
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    Default Re: Disk activity about every two seconds.

    I got htop and iotop installed and have run them I really don't see any obvious culprit. This might be one of those "it can't be helped" things. I do have six hard drives installed.

    sdc is my / and /home and a process jbd2/sdc1-8 and jbs2/sdc2-8 does show up a lot in iotop
    Tumbleweed

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