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Thread: high cpu for process events/1

  1. #1

    Default high cpu for process events/1

    Hi
    in the past two days my opensuse 11.3 is on high cpu consumed by process events/1 and everything is slow, I have no idea whats going on.

    this is the output from top:

    Code:
    Tasks: 209 total,   4 running, 205 sleeping,   0 stopped,   0 zombie
    Cpu(s):  8.1%us, 31.2%sy,  0.0%ni, 59.8%id,  0.6%wa,  0.1%hi,  0.2%si,  0.0%st
    Mem:   3983740k total,  2964716k used,  1019024k free,    55732k buffers
    Swap:  4842492k total,     1076k used,  4841416k free,  1837828k cached
    
      PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                         
        9 root      20   0     0    0    0 R   60  0.0 104:14.45 events/0                                                        
     9945 shalom    20   0  931m 220m  30m S   14  5.7   9:25.40 firefox                                                         
     1643 root      20   0  187m  51m  21m S    2  1.3   7:58.36 Xorg                                                            
    15084 shalom    20   0 81952  17m  12m S    1  0.5   0:04.25 npviewer.bin                                                    
    15185 shalom    20   0  136m  33m 3392 S    1  0.8   0:00.83 offlineimap                                                     
    13869 shalom    20   0 57712  13m 9008 S    1  0.3   0:12.06 npviewer.bin                                                    
    15063 shalom    20   0  524m  37m  31m S    0  1.0   0:00.85 chromium                                                        
       68 root      20   0     0    0    0 S    0  0.0   0:03.20 ata/0                                                           
       82 root      20   0     0    0    0 S    0  0.0   0:08.62 scsi_eh_3                                                       
     2548 shalom    20   0  162m  11m 9780 S    0  0.3   0:06.16 tracker-status-                                                 
     3477 shalom    20   0  276m  17m  11m S    0  0.4   0:09.18 gnome-terminal                                                  
     7597 shalom    20   0 1106m  66m  24m S    0  1.7   0:41.33 chromium                                                        
     9710 shalom    20   0  8668 1156  788 R    0  0.0   0:21.38 top                                                             
    14713 shalom    20   0  8772 1184  788 R    0  0.0   0:02.09 top                                                             
        1 root      20   0 12408  644  600 S    0  0.0   0:00.56 init
    Last edited by Knurpht; 01-Jan-2011 at 12:49.

  2. #2
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    Default Re: high cpu for process events/1

    I've seen this when my wireless mouse was breaking down ( it stopped working a couple of days after the start of what you describe )
    - Athlon X6 3.6 GHz, 16 GB DDR3, 30 GB SSD, 3 TB of disks, GT540, openSUSE 12.2 x86_64 + KDE 4.10 + GNOME 3
    - ASUS A73SD, Intel + GT610M Optimus, 6 GB, 120 GB SSD, openSUSE Tumbleweed

    Anything that can go wrong.... will teach us

    http://en.opensuse.org/User:Knurpht
    http://nl.opensuse.org/Gebruiker:Knurpht

  3. #3
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    Default Re: high cpu for process events/1

    That CPU is processing lots of interrupts. As mentioned earlier, some piece of
    hardware is likely on the way to the scrap heap.

    To see what is causing it, enter the command 'cat /proc/interrupts'. If it is
    not obvious which one is at fault, wait 1 minute and repeat the command. A
    comparison should show which device is at fault, or a set of devices if an
    interrupt is shared.

  4. #4
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    Smile Re: high cpu for process events/1

    I've seen this when my wireless mouse was breaking down ( it stopped working a couple of days after the start of what you describe )
    Might also be time for a new battery.

    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

  5. #5

    Default Re: high cpu for process events/1

    Quote Originally Posted by Knurpht View Post
    I've seen this when my wireless mouse was breaking down ( it stopped working a couple of days after the start of what you describe )
    I'm not using a wireless mouse

  6. #6

    Default Re: high cpu for process events/1

    Quote Originally Posted by lwfinger View Post
    That CPU is processing lots of interrupts. As mentioned earlier, some piece of
    hardware is likely on the way to the scrap heap.

    To see what is causing it, enter the command 'cat /proc/interrupts'. If it is
    not obvious which one is at fault, wait 1 minute and repeat the command. A
    comparison should show which device is at fault, or a set of devices if an
    interrupt is shared.
    I'm not sure how to see which device is at fault, I'v watched the command for several minutes and there was only a change in the cpu columns,

    Code:
               CPU0       CPU1       
      0:     258057     308529   IO-APIC-edge      timer
      1:       1213       1704   IO-APIC-edge      i8042
      8:         13         14   IO-APIC-edge      rtc0
      9:       3420        342   IO-APIC-fasteoi   acpi
     12:      34797      37669   IO-APIC-edge      i8042
     14:      32580        511   IO-APIC-edge      ata_piix
     15:          0          0   IO-APIC-edge      ata_piix
     16:      40288         40   IO-APIC-fasteoi   uhci_hcd:usb5, yenta
     17:         19         13   IO-APIC-fasteoi   uhci_hcd:usb6
     18:          0          0   IO-APIC-fasteoi   uhci_hcd:usb7
     19:        125        150   IO-APIC-fasteoi   ehci_hcd:usb2
     20:         79         79   IO-APIC-fasteoi   uhci_hcd:usb3
     21:          0          0   IO-APIC-fasteoi   uhci_hcd:usb4
     22:          3          0   IO-APIC-fasteoi   ehci_hcd:usb1
     40:          0          0   PCI-MSI-edge      PCIe PME
     41:          0          0   PCI-MSI-edge      PCIe PME
     42:          0          0   PCI-MSI-edge      PCIe PME
     43:          0          0   PCI-MSI-edge      PCIe PME
     44:          0          0   PCI-MSI-edge      PCIe PME
     45:      99915      96319   PCI-MSI-edge      ahci
     46:     115633        443   PCI-MSI-edge      i915
     47:        524         13   PCI-MSI-edge      eth0
     48:      43550      51506   PCI-MSI-edge      iwlagn
     49:        794        365   PCI-MSI-edge      hda_intel
    NMI:        245        832   Non-maskable interrupts
    LOC:     486062    1286760   Local timer interrupts
    SPU:          0          0   Spurious interrupts
    PMI:        245        832   Performance monitoring interrupts
    PND:          0          0   Performance pending work
    RES:      14814      20468   Rescheduling interrupts
    CAL:       1077        699   Function call interrupts
    TLB:       2699       4331   TLB shootdowns
    TRM:          0          0   Thermal event interrupts
    THR:          0          0   Threshold APIC interrupts
    MCE:          0          0   Machine check exceptions
    MCP:          8          8   Machine check polls
    ERR:          1
    MIS:          0

  7. #7

    Default Re: high cpu for process events/1

    BTW , I switched to kernel 2.5.36 to see if things get better and its the same only now its a process called kworker,
    I'm running gnome .

    top:
    Code:
    Tasks: 205 total,   2 running, 203 sleeping,   0 stopped,   0 zombie
    Cpu(s):  4.0%us, 34.7%sy,  0.0%ni, 61.3%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
    Mem:   3983336k total,  3823788k used,   159548k free,   100636k buffers
    Swap:  4842492k total,        0k used,  4842492k free,  2783600k cached
    
      PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                         
     1304 root      20   0     0    0    0 S   66  0.0  20:20.35 kworker/1:2                                                     
     4216 shalom    20   0  830m 193m  32m S    7  5.0   1:13.43 firefox                                                         
     1597 root      20   0  172m  45m  19m S    2  1.2   1:26.25 Xorg                                                            
     2524 shalom    20   0  385m  36m  25m S    1  0.9   0:22.21 psi                                                             
     4475 shalom    20   0 77612  23m  13m R    1  0.6   0:09.26 npviewer.bin                                                    
     4834 root      20   0  8768 1180  788 S    1  0.0   0:01.36 top                                                             
     4908 root      20   0  8668 1176  788 R    1  0.0   0:00.02 top                                                             
     2335 shalom    20   0  193m  12m  10m S    0  0.3   0:03.54 multiload-apple                                                 
     3408 shalom    20   0  193m  27m 5076 S    0  0.7   0:14.40 compiz                                                          
     4292 shalom    20   0 1116m  67m  25m S    0  1.7   0:04.63 chromium                                                        
        1 root      20   0 12408  772  628 S    0  0.0   0:00.62 init                                                            
        2 root      20   0     0    0    0 S    0  0.0   0:00.00 kthreadd                                                        
        3 root      20   0     0    0    0 S    0  0.0   0:00.25 ksoftirqd/0                                                     
        6 root      RT   0     0    0    0 S    0  0.0   0:00.00 migration/0                                                     
        7 root      RT   0     0    0    0 S    0  0.0   0:00.00 watchdog/0                                                      
        8 root      RT   0     0    0    0 S    0  0.0   0:00.01 migration/1

  8. #8
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    Smile Re: high cpu for process events/1

    What is your Video chipset and have you loaded any video drivers not included in the standard release? For instance, I use nVidia and I have loaded the nVidia Proprietary video driver. Have you considered trying the very latest Kernel version 2.6.37-rc8 by chance? As far as I can tell, kworker is the new name for the same old task and there is no significance in its name change for this issue.

    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

  9. #9

    Default Re: high cpu for process events/1

    I just disables the ethernet card in the bios and the problem disappeared, now I'm left only with the wireless card which I don't mind so much because this is what I'm using usually.
    does this mean that I need a new ethernet card?
    is there something else I should do to completely disable it?

  10. #10
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    Smile Re: high cpu for process events/1

    I just disables the ethernet card in the bios and the problem disappeared, now I'm left only with the wireless card which I don't mind so much because this is what I'm using usually.
    does this mean that I need a new ethernet card?
    is there something else I should do to completely disable it?
    I am not sure, but it must be bad to cause this issue. What network card/chipset are we talking about here? For any one built-in, you must keep it disabled and add another, or just replace it when it is already an add-in card. Network cards on Desktops are really cheap these days and easy to replace. A built-in hardwire network interface on a Laptop would be a real problem to fix.

    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

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