Linked Questions

36
votes
3answers
79k views

Why does kworker cpu usage get so high? [duplicate]

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 ...
0
votes
1answer
15k 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 ...
4
votes
1answer
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 ...
0
votes
1answer
1k 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 ...
10
votes
1answer
17k 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 ...
8
votes
1answer
10k 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 ...
12
votes
4answers
3k 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/...
5
votes
4answers
2k 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 ...
13
votes
1answer
2k 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 ...
0
votes
1answer
2k 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... ...
2
votes
1answer
3k 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/...
3
votes
1answer
711 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 ...
1
vote
0answers
485 views

kworker 100% cpu on 1 core only

I just purchased a new Asus G752VT and installed Ubuntu 16.04.4 on it. I have observed several issues but one issue which is immediately caught my attention is that the kworker process is taking up ...
0
votes
1answer
294 views

Interpret perf output to fix 100% cpu usage

The first core of my i5 6600k cpu runs at nearly 100% all the time. To try and find the cause of this I am using perf as per this thread: Kworker, what is it and why is it hogging so much CPU? I ran ...
0
votes
0answers
100 views

CPU overheating when using SSD in DVD bay with a caddy, kworker using 20%cpu

I am using a dell laptop, CPU i7, GPU NVIDIA, RAM 8GB. I bought an ssd and put it in a caddy and put in the dvd bay. Then I installed ubuntu-gnome 16.04 onto this ssd. This ssd is the second drive on ...

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