Jtdcftul

Whenever kidle_inject starts running on my system the load shoots up. In general it only gets to a load of around this 5.23, 3.65, 2.54 but a lot of the time it jumps up past the 15 mark on each of them. At that point the system grinds to a halt and I have to power it off.

This only happens when the kidle_inject process starts. How can I disable this process so my machine can work and I can get some work done.

Example top:

top - 12:43:48 up  3:02,  3 users,  load average: 6.57, 5.53, 3.33

Tasks: 256 total,   3 running, 253 sleeping,   0 stopped,   0 zombie

%Cpu(s):  5.9 us, 16.6 sy,  0.0 ni, 74.7 id,  0.5 wa,  0.0 hi,  2.3 si,  0.0 st

KiB Mem:   8080252 total,  7937856 used,   142396 free,   258904 buffers

KiB Swap:        0 total,        0 used,        0 free.  4061336 cached Mem



  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND

13509 root     -51   0       0      0      0 S  54.7  0.0   3:29.47 kidle_inject/1

13511 root     -51   0       0      0      0 S  54.1  0.0   3:30.92 kidle_inject/3

13510 root     -51   0       0      0      0 S  48.8  0.0   3:11.60 kidle_inject/2

13508 root     -51   0       0      0      0 S  47.6  0.0   3:08.47 kidle_inject/0

It appears that this is a bug in the kernel.

From the comments on that bug report, running the command sudo rmmod intel_powerclamp seems to have stopped the kidle_inject processes and I haven't noticed any issues with doing so as of yet.

Hopefully this will be fixed soon. If I do notice anything I will update this answer.

Update

The rmmod command needs to be run every time you boot the machine. I have not noticed anything bad happening since running this command.

Update 2

I have noticed since doing this that my CPU temp now tends to run much lower at around the ~72°

For making this set while booting use a command

echo "blacklist intel_powerclamp" > /etc/modprobe.d/disable-powerclamp.conf

The accepted answer is incomplete. According to the bug comments, the kidle_inject processes are spawned to throttle processor and protect it from further overheating.

Before "fixing" the bug, make sure your fan is clean and works correctly. I had this problem and found out that the vent was full of dust. After cleaning and reboot no kidle_inject was spawned anymore.

If you are running a macbook, make sure that you have macfanctld installed. If you don't, the fan will be fixed at around 2000 RPM out of the max 6000. This can be seen by the sensors command. In this situation powerclamp will kick in to save the CPUs rather early.

I noticed this today as well. Oddly enough for the kind of CPU usage, the fan wasn't making any noise. Managed to reboot the machine and then looked at BIOS Fan speed. It showed that the fan had stopped (no RPM reading). So after a bit of a cleaning (quite literally - opening the laptop lid, cleaning a bit, the fan started working fine and things got alright. So might be the problem is with your CPU fan. So simply disabling the intel_powerclamp may not be a good idea.

I did the following and it works perfectly :
1. check if the module is loaded: lsmod |grep -i intel_powerclamp
2. if previous command show that module is loaded, perform the next lines.
3.add the following line in your crontab rules "@reboot /sbin/rmmod intel_powerclamp" or "echo '/sbin/rmmod intel_powerclamp' >> /etc/bash.bashrc" (it will affect to all users) or "echo 'blacklist intel_powerclamp' > /etc/modprobe.d/disable_mods.conf".

best regards,