udevd cpu high usage <SOLVED>

[docnascar]

After a recent update my pc now sits at 100% cpu usage after some time period. If I reboot, my pc acts normal but after I leave it sit for a while by itself, it gets sluggish.  I noticed from system activity that, udevd goes to a high cpu usage rate.

I also notice when I shutdown pclinux, that the avahi daemon fails to kill. I don't know if this is related to the same issue.

I have kde. Let me know if you need any other stats. My last update was yesterday and my cpu usage was 100% today when I got home from work.

Anyone else had this issue? Ideas?

[djohnston]

Run top or htop in a terminal to see what is hogging the CPU. With htop, you can toggle tree view mode with the F5 key to see what processes are called by udevd.

[docnascar]

Thanks. Right now its ok, since I rebooted. When it gets hogged up again, I will do that.

[docnascar]

I think my cpu usage is slowly creeping up over time. Here it is 10 minutes or so after reboot.

Had to install htop. Can you copy text from it?

Never posted a pic before on this forum. Lets try this.
http://i68.blocked-photobucket/albums/i39/docnascar/debug/53_percent_cpu.png

Why is the address changing to blocked?

Code:

"http://i68.photobucket..."
"http://i68.blocked-photobucket..."

[docnascar]

It is creeping up.
~30 minutes into it and we are 93% cpu usage now.

My swap says 0, is that right?

I don't know how to get the pics to work with photobucket yet. Still playing.

udevd says command is /sbin/udevd -d

[JohnW_57]

Never posted a pic before on this forum. Lets try this.
http://i68.blocked-photobucket/albums/i39/docnascar/debug/53_percent_cpu.png


"http://i68.photobucket..."
"http://i68.blocked-photobucket..."


Why is the address changing to blocked?


http://www.pclinuxos.com/forum/index.php/topic,1992.0.html

JohnW

[docnascar]

I see now.

[docnascar]

35 min after reboot, cpu 93%. Its 100% now after 1hr. Note: I filtered udevd.

[AS]

docnascar,

try to run the following command, should produce more useful info: 

Code:

udevadm monitor

AS

[docnascar]

docnascar,

try to run the following command, should produce more useful info:  

Code:

udevadm monitor

AS

 
Yeh, I saw this command on another forum and was just messing around.


When I ran udevadm monitor it will scroll out things forever until I sent a ctrl-c. I kill the udevd and ran it again and now it doesn't scroll the udev part. And my cpu usage went from 100% to 13%.

Not sure what these define:

Code:

UDEV  [1328747544.837962] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747544.859897] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)

It constantly scrolled the above. I can't post my terminal output for some reason. The forum is giving me errors. I'll keep trying to get the rest of it.

[docnascar]

Code:

[root@localhost docnascar]# udevadm monitor
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent

UDEV  [1328747544.837962] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747544.859897] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747544.869777] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747544.915692] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747544.927888] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747544.953266] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747544.961158] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747544.986225] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747544.998752] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.023131] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.035914] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.046845] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.081109] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.099813] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.122756] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.132132] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.161761] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.171839] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.190176] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.217451] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.228797] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.255099] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.274771] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.295735] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.307924] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.331769] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.367749] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.385703] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.404395] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.433565] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.455932] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.470049] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.480904] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.507218] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.537766] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.547838] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.562852] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.570669] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.571005] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.590751] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.604086] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.641887] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.659772] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.680841] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.704784] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.719880] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.735060] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.760446] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.771787] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.788976] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.802489] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.813775] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.844824] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.857921] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.875758] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.884776] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.914806] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747545.924798] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
UDEV  [1328747545.960618] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
^C[root@localhost docnascar]#

[AS]

docnascar,

try to run the following command, should produce more useful info:  

Code:

udevadm monitor

AS

 
Yeh, I saw this command on another forum and was just messing around.


When I ran udevadm monitor it will scroll out things forever until I sent a ctrl-c. I kill the udevd and ran it again and now it doesn't scroll the udev part. And my cpu usage went from 100% to 13%.

Not sure what these define:

Code:

UDEV  [1328747544.837962] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747544.859897] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)

It constantly scrolled the above. I can't post my terminal output for some reason. The forum is giving me errors. I'll keep trying to get the rest of it.

Look like a disk (or optical unit) attached to ide1 is doing some "... excessive noise ..." 

Is it possible for you to either disable this uniy from BIOS or physically disconnect it ? Just to verify if the issue go away.
Can you post more info about that unit (brand/model ...)  and may be also the ide driver module ... ?

[docnascar]

docnascar,

try to run the following command, should produce more useful info:  

Code:

udevadm monitor

AS

 
Yeh, I saw this command on another forum and was just messing around.


When I ran udevadm monitor it will scroll out things forever until I sent a ctrl-c. I kill the udevd and ran it again and now it doesn't scroll the udev part. And my cpu usage went from 100% to 13%.

Not sure what these define:

Code:

UDEV  [1328747544.837962] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)
KERNEL[1328747544.859897] change   /devices/pci0000:00/0000:00:0d.0/ide1/1.1/block/hdd (block)

It constantly scrolled the above. I can't post my terminal output for some reason. The forum is giving me errors. I'll keep trying to get the rest of it.

Look like a disk (or optical unit) attached to ide1 is doing some "... excessive noise ..." 

Is it possible for you to either disable this uniy from BIOS or physically disconnect it ? Just to verify if the issue go away.
Can you post more info about that unit (brand/model ...)  and may be also the ide driver module ... ?

Its funny you mention this. I read this in a thread about an optiarc dvd drive. I'm not sure what I have.
http://www.linuxquestions.org/questions/slackware-14/udevd-high-cpu-load-810937/

[AS]

Its funny you mention this. I read this in a thread about an optiarc dvd drive. I'm not sure what I have.
http://www.linuxquestions.org/questions/slackware-14/udevd-high-cpu-load-810937/

I do my reading ... on the net 
About the drive brand model ... try dmesg or look into /var/log/messages, /var/log/syslog /var/loog/boot ...

[docnascar]

No vendor yet just:

Code:

Probing IDE interface ide1...
hdd: 48X12X50 CD-RW 1.04 20021101, ATAPI CD/DVD-ROM drive
hdd: host max PIO5 wanted PIO255(auto-tune) selected PIO4
hdd: UDMA/33 mode selected
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15

All those logs say pretty much the same thing.
hdd: 48X12X50 CD-RW 1.04 20021101, ATAPI CD/DVD-ROM drive