Linked Questions

0 votes
1 answer
16k views

Kworker consuming 100% CPU [duplicate]

Possible Duplicate: Kworker, what is it and why is it hogging so much CPU? I have a process named kworker which is continuously consuming 100% of the CPU's computing capacity. I have tried ...
user avatar
  • 1
4 votes
0 answers
2k views

kworker taking 100% of one core [duplicate]

I updated from ubuntu 13.10 to 14.04. I have a quad core, and one core is pegged at 100% usage because of kworker. I know that kworker generally is doing things on behalf of the kernel, but I don't ...
user avatar
0 votes
1 answer
2k views

Kworker shows very high CPU usage [duplicate]

In Ubuntu 16.04, kworker has a very high CPU usage. It is almost 80% all time and the fan runs at high speed and makes a loud noise. I do all commands in this link but that wasn't useful. Now what I ...
user avatar
42 votes
3 answers
97k views

Why does kworker cpu usage get so high?

I recently installed Ubuntu 12.04 on my Samsung laptop alongside Windows 7. Whenever I use Ubuntu (even when its idle) kworker uses almost 90% of one of 8-cores. Even though it doesn't really affect ...
user avatar
  • 421
17 votes
1 answer
21k views

How can I enable the "magic sysrq key" on ubuntu desktop? [duplicate]

The magic SysRq key does not work on my Ubuntu 16.04 desktop. I imagine it's now disabled by default. My attempts to enable it did not work, and the only thing Google finds is a 2007 forum post from ...
user avatar
10 votes
1 answer
18k views

What are kswapd0, kworker/num:num, ksoftirqd/num?

Exactly what are these services / programs. Apparently they make my system almost useless. Any one of them at point of time uses at least 50% CPU and continuous access to HDD. I'm not exactly sure ...
user avatar
  • 3,133
9 votes
2 answers
9k views

Ubuntu 16.04 kworker using high CPU constantly

On Ubuntu 16.04 computer I saw kworker take up 80% of a CPU, consistently. I generated a perf report: sudo apt-get install linux-tools-common linux-tools-$(uname -r) Record some 10 seconds of ...
user avatar
  • 200
12 votes
4 answers
4k views

What is causing Ubuntu on MacBook Pro to have high CPU usage?

I installed Ubuntu 13.10 on a MacBook Pro 10,1. However, after installing, the kworker process consumes over 90% of CPU usage. I tried the following: (Suggested in this answer) Execute grep . -r /sys/...
user avatar
7 votes
4 answers
4k views

Ubuntu 13.10 on Thinkpad slows down dramatically when power adapter is plugged in

When I plug in my power cable -- sometimes -- Ubuntu 13.10 immediately slows down in just about every way. This has been happening for months, but I only recently finally connected the dots, in part ...
user avatar
  • 180
14 votes
1 answer
3k views

Single core always close to 100% load on Ubuntu 16.04 (without any work being done)

My Ubuntu 16.04 machine has 4 CPU cores, and one of them (which one exactly varies) always has a load of 90% to 100%. This is true no matter what I'm doing, and even when I'm not doing anything at ...
user avatar
  • 336
0 votes
1 answer
3k views

Can "startup applications" be less cumbersome?

With this tip I saw there is a total of about 60 applications being launched by startup applications, and at the moment I have to sit back and wait about 45s while the desktop is unresponsive... ...
user avatar
1 vote
1 answer
5k views

Kworker consumes ~80% of 1 CPU core, how to get rid of this once and for all?

Kworker takes about 80% of CPU1 each time I boot the system. I tried to do as explained in this answer. Here's the output of grep . -r /sys/firmware/acpi/interrupts: root@fmcomp:~# grep . -r /sys/...
user avatar
  • 85
3 votes
1 answer
874 views

Kworker making computer difficult to use

I followed the steps on here Kworker, what is it and why is it hogging so much CPU? to try to figure out why there's a Kworker consuming a lot of CPU power. Normally this wouldn't be an issue because ...
user avatar
2 votes
2 answers
598 views

Ubuntu 18.04 huge CPU usage on WiFi (Intel wireless card 9620)

I'm having some issues with CPU usage when using wireless connection on my laptop. This has never happened on wired connection, therefore I'm assuming wifi connection is somewhat related. top says ...
user avatar
1 vote
1 answer
445 views

Hard disk red LED constantly turned on

With ubuntu installed on my PC, the hard disk red LED is constantly on, it gets turned off for a couple of seconds but then goes on again for a longer time. During this time, the system is basically ...
user avatar
  • 113

15 30 50 per page