kworker - excessive CPU useage - Ubunt 14.04 64 bit fresh install

[xigen]

I am at a loss for how to get kworker or what is driving kworker to suck up sooo much cpu.

Here is what I tried so far:

meow@MeowBatunde:~$ uname -r
3.13.0-34-generic




89 echo disable > /sys/firmware/acpi/interrupts/gpe01
90 unrame -r
91 uname -4
92 uname -r
93 sudo swapoff -a
94 top
95 sudo apt-get install linux-tools
96 uname -r
97 sudo apt-get install linux-tools-generic 3.13.0.34.40
98 sudo apt-get install linux-tools-generic 3.13.0.34-generic



$ top



4851 root 20 0 0 0 0 R 54.5 0.0 441:50.09 kworker/7:3
7 root 20 0 0 0 0 R 46.3 0.0 79:49.14 rcu_sched
2382 meow 20 0 2366816 985176 56804 R 41.6 12.0 151:25.21 firefox
1204 root 20 0 324512 107016 46336 S 6.6 1.3 24:42.66 Xorg
1972 meow 20 0 1814752 128712 40864 S 2.3 1.6 5:51.06 compiz
2583 meow 20 0 729720 21620 13580 S 2.3 0.3 0:06.16 gnome-terminal
2032 meow 20 0 1810864 76564 49084 S 2.0 0.9 0:10.41 nautilus


Is this related to my delta66 sound card?


http://www.archivum.info/ubuntu-bugs@lists.ubuntu.com/2011-04/17233/%28Bug-755226%29-%28NEW%29-syndaemon-starts-eating-up-100-CPU-after-waking-laptop-from-sleep.html


from 2011 -- some things which did not work for me

https://lkml.org/lkml/2011/3/31/68




meow@MeowBatunde:~$ echo workqueue:workqueue_queue_work > /sys/kernel/debug/tracing/set_event
bash: /sys/kernel/debug/tracing/set_event: Permission denied
meow@MeowBatunde:~$ sudo echo workqueue:workqueue_queue_work > /sys/kernel/debug/tracing/set_event
bash: /sys/kernel/debug/tracing/set_event: Permission denied
meow@MeowBatunde:~$



I am having a festival of boot loader (GRUB) issues. I wonder if the advice from a prior post would help ...

Re: Kworker constant 85% w/ ivy bridge I5
Update: I've disabled acpi and that corrected the problem. Still not sure why that would cause this to happen.


http://askubuntu.com/questions/160036/how-do-i-disable-acpi-when-booting


meow@MeowBatunde:~$ grep . -r /sys/firmware/acpi/interrupts/
/sys/firmware/acpi/interrupts/sci: 0
/sys/firmware/acpi/interrupts/error: 0
/sys/firmware/acpi/interrupts/gpe00: 0 invalid
/sys/firmware/acpi/interrupts/gpe01: 0 invalid
/sys/firmware/acpi/interrupts/gpe02: 0 invalid
/sys/firmware/acpi/interrupts/gpe03: 0 invalid
/sys/firmware/acpi/interrupts/gpe04: 0 disabled
/sys/firmware/acpi/interrupts/gpe05: 0 invalid
/sys/firmware/acpi/interrupts/gpe06: 0 invalid
/sys/firmware/acpi/interrupts/gpe07: 0 invalid
/sys/firmware/acpi/interrupts/gpe08: 0 invalid
/sys/firmware/acpi/interrupts/gpe09: 0 invalid
/sys/firmware/acpi/interrupts/gpe10: 0 disabled
/sys/firmware/acpi/interrupts/gpe11: 0 disabled
/sys/firmware/acpi/interrupts/gpe12: 0 disabled
/sys/firmware/acpi/interrupts/gpe13: 0 disabled
/sys/firmware/acpi/interrupts/gpe14: 0 invalid
/sys/firmware/acpi/interrupts/gpe15: 0 invalid
/sys/firmware/acpi/interrupts/gpe16: 0 invalid
/sys/firmware/acpi/interrupts/gpe0A: 0 invalid
/sys/firmware/acpi/interrupts/gpe17: 0 invalid
/sys/firmware/acpi/interrupts/gpe0B: 0 disabled
/sys/firmware/acpi/interrupts/gpe18: 0 disabled
/sys/firmware/acpi/interrupts/gpe0C: 0 invalid
/sys/firmware/acpi/interrupts/gpe19: 0 invalid
/sys/firmware/acpi/interrupts/gpe0D: 0 invalid
/sys/firmware/acpi/interrupts/gpe0E: 0 invalid
/sys/firmware/acpi/interrupts/gpe0F: 0 disabled
/sys/firmware/acpi/interrupts/gpe1A: 0 invalid
/sys/firmware/acpi/interrupts/gpe1B: 0 disabled
/sys/firmware/acpi/interrupts/gpe1C: 0 invalid
/sys/firmware/acpi/interrupts/gpe1D: 0 enabled
/sys/firmware/acpi/interrupts/gpe1E: 0 invalid
/sys/firmware/acpi/interrupts/gpe1F: 0 invalid
/sys/firmware/acpi/interrupts/sci_not: 0
/sys/firmware/acpi/interrupts/ff_pmtimer: 0 invalid
/sys/firmware/acpi/interrupts/ff_rt_clk: 0 disabled
/sys/firmware/acpi/interrupts/gpe_all: 0
/sys/firmware/acpi/interrupts/ff_gbl_lock: 0 enabled
/sys/firmware/acpi/interrupts/ff_pwr_btn: 0 enabled
/sys/firmware/acpi/interrupts/ff_slp_btn: 0 invalid



thoughts? suggestions?

[xigen]

I have no clue what worked....

Upon re-boot kworker is no longer an issue.