CPU usage indicate how much of a workload is being handled by the CPU.

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3
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2answers
3k views

Why does my System Process use 50% of CPU time?

The System process running on my Windows 7 installation uses almost 50% of CPU arbitrarily. I monitor the process with Process Explorer from Sysinternals. Click the images to enlarge them... ...
0
votes
2answers
72 views

Windows 7, left alone for 5 mins and system pushes cpu to 20% until i press a key or move mouse

I have scanned with avast a few times for virus's but nothing has been found, however.. every time i leave my computer for about 5 minutes the process labelled 'system' which is the 'ntoskrnl.exe' ...
3
votes
3answers
484 views

Windows 10 Runtime Broker CPU usage

I have installed Windows 10 and now it is using around 10-15 % of my CPU by a process called Runtime Broker. What I can see is that a process called "From Microsoft Background Task" is being created ...
0
votes
1answer
18 views

kernel_task cpu usage 300% plus long press power button to start Mac Air

I'm having Mac Air 13inch 2014 having 4 gb memory and 120 gb Hard disk , from the few days i have been facing a problem that kernel_task is taking 300% of my cpu and my mac is running very slow and ...
0
votes
1answer
20 views

OneDrive Sync and High Resource Usage

Lately the OneDrive sync on my Windows 8.1 machine has been running away with the CPU. It doesn't noticeably affect system performance, but it's running hot enough that the fan is always on high. ...
0
votes
0answers
50 views

Disk size varies - MooseFs

I have 4 moosefs chunkservers with 8 2.7 TB storage on each, I mount them using mfsmount and then export with nfs. Recently I noticed high iowait on my chunkservers, then huge mount size drops, see ...
0
votes
0answers
17 views

What particular actions/request caused spikes on the CPU?

While running a load test using Visual Studio 2013, I’ve noticed some spikes in the CPU due to SQL Server Windows NT on the DB machine and IIS Worker Process on the web server. Both processes used ...
13
votes
2answers
37k views

Troubleshoot High CPU usage by the “System” process

I have noticed that from some time my system is freezing and its probably caused by the high CPU usage which is caused by the system process. All applications I'm running is the Skype, TeamSpeak and ...
-1
votes
1answer
26 views

What's the right choice to run a cooler Cpu (quiter laptop)?

Assuming that on the same laptop with an intel "i-series" processor I could have exactly the same workload, in order to achieve the lowest cpu temperatures it would be better: Higher CPU clock ...
2
votes
2answers
185 views

How do I stop the RuntimeBroker exe from using excessive amounts of CPU?

Just upgraded to Windows 10 and my machine is running a lot of CPU!, and this is on an i7 Checked Task Manager and the first culprit looks to be the RuntimeBroker.exe Is there anyway to get this ...
8
votes
5answers
12k views

Why does Firefox cause high-CPU-usage “spikes” every few seconds?

When I start Firefox, I have no problems for a while, but after a couple of days, CPU spikes start to occur. During a spike, Firefox freezes and then stops. Spikes occur every seven to ten seconds, ...
3
votes
2answers
7k views

linux migration/N high cpu consumption

on my linux appliance based on 3.0.0-14 kernel I got: RPN:/tmp# ps axuf | grep migration root 6 92.9 0.0 0 0 ? S Apr23 2788:33 \_ [migration/0] root 7 99.7 0.0 ...
0
votes
0answers
138 views

Windows 10 apps and CPU usage

I upgraded from Windows 8.1 to Windows 10, and the apps executable files are lining up in my CPU and causing a lot of lag. I keep having to close down my computer and restart it to clear things, and ...
0
votes
1answer
164 views

svchost causes high cpu usage

Svchost.exe in my Windows 7(x64, Ultimate) PC causes high CPU usage sometimes. The CPU stays at about 65%. The services which are being run by this instance of svchost are FDResPub, SSDPSRV and ...
0
votes
1answer
27 views

What is CPU utilization and how is it calculated, how does OS scheduling work?

I studied x86_64 assembly language, somewhere in my studies I learned that the CPU cannot stop doing stuff, it must constantly run/execute something. Question 1) I am wondering then, how come there ...
4
votes
3answers
14k views

Why won't Windows use the other CPU cores?

In Windows Task Manager the Performance tab shows the first CPU maxed out, the other 7 just idling along with the occasional spike. What gives? More info: I've got 8GB and only 4.5GB are being used. ...
5
votes
2answers
5k views

High CPU usage by dwm.exe when nothing is happening

Setup: Windows 7 Ultimate, running in a VMware box inside Windows 8, VMware Tools installed; VMware Workstation is the only application launched in win8). Aero is on. Starting a few months ago, on ...
1
vote
1answer
80 views

Disk intermittently goes to 100% actviity - system pauses [duplicate]

Windows 8.1 system. Sometimes the disk suddenly go 100% highest active time for 1 or 2 seconds, and at the same time CPU usage goes down. During these period, screen processing does not work any ...
1
vote
0answers
565 views

Some processes high CPU usage in Windows 10

I installed Windows 10 and all the driver (BIOS included) from Dell site; luckily my laptop is Windows 10 compatible. 2 processes use a little too CPU, I'm talking about "System" and "Windows desktop ...
0
votes
1answer
104 views

Why does my CPU have random 100% usage peaks?

I need your help. It's been since a couple of weeks by now that my cpu reaches peaks of 100% usage on tasks that, before, never needed this much work. And it is pretty annoying, seeing that when the ...
9
votes
1answer
15k views

How does windows “limit” the CPU (Power Options / Battery saving)

Can anyone explain how Windows effectively limits the CPU? Last time I tried some tricks to let my laptop not overheat, so I tried limiting the CPU to 70%. As for my suprise it stopped my laptop ...
4
votes
6answers
867 views

What might cause a severe slowdown on a PC without showing high CPU usage?

A friend's Windows XP laptop has become extremely unresponsive over the last few days, taking over 30 seconds to open My Computer for example and a over a minute to open a locally stored Word ...
1
vote
2answers
408 views

Stop Synergy using 25% CPU

I just upgraded to Synergy 1.7.3 and now my Windows PC is stuck at 25% CPU usage permanently! It's caused by synergyd.exe. I can end-task on it without any problems (doesn't stop Synergy from ...
12
votes
11answers
111k views

How do I troubleshoot high 'svchost.exe' usage in Windows 7?

I'm having a problem with Windows 7 64-bit. I thought it was slow and all, but then I saw that the CPU usage was always around 80% and started searching for a solution. There are two svchost.exe's ...
0
votes
0answers
25 views

My Single-Threaded CPU-Overloading apps use a percent of a thread, graphs shows different results

I made very simple C++ app that contains an empty while(true); loop, I tried with both optimized (-O2) and without optimization, both gave the same result in Task Manager, I even tried same Java and ...
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votes
1answer
133 views

How to terminate System Idle Process?

Every time i start my windows 7, the CPU gets very high, up to 60% and i haven't opened nothing yet. I opened task manager and saw what process where using the most. In the CPU usage and i found that ...
0
votes
0answers
91 views

New Windows 8.1 laptop is at 100% CPU running multiple installers

My business partner's new Dell laptop is racing at 90-100% CPU and 95-100% disk. This happened after he installed the latest updates. There are multiple command prompts running - but are not visible. ...
2
votes
2answers
156 views

Windows 7 running slowly despite having lots of CPU and memory free

This is my computer spec Intel i7 2500k @ 3.4ghz, Win7 64bit 16gb of ram Radeon HD 6800 My computer is starting to run progressively slower for example when switching between programs ie excel to ...
0
votes
0answers
14 views

Linux, assign CPUs to processes

I have a process which i'd rather want to run it in real-time, but instead of using a real-time OS or running a real-time linux core (which is bad with internet speed as i found - maybe i am wrong), ...
0
votes
0answers
14 views

Purpose of Omnidaemon?

I have ubuntu 12.04 running(as prime OS) with installed Windows and RedHat in VM, there is Omnidaemon process(in Ubuntu 'system monitor') with multiple instances and it is using almost 95% of the CPU ...
-1
votes
1answer
35 views

Safety with CPU amount on Windows 8.1

I am trying to completely max out a Lenovo Edge 15 with an Intel(R) Core i7-4510U CPU with 8 gb of RAM( 16gb coming in the mail, also the max. It also has a Samsung evo 840 256 gb SSD. My concern is ...
3
votes
4answers
10k views

Strange cpuinfo, how many cores does these physical cpu has?

At the end of this post is my /proc/cpuinfo. I know the Physical cpu number is 2 grep 'physical id' /proc/cpuinfo|sort|uniq|wc -l 2 But how many cores does each cpu have? The 'cpu cores' shows ...
3
votes
2answers
120 views

Which graphical settings impact CPU usage?

When running a game on a CPU-bottlenecked PC, which graphics settings should be decreased to improve performance? In other words, which settings usually have impact on CPU usage (rather than GPU)?
1
vote
1answer
411 views

Windows 8.1 and Android Lollipop USB Tethering strange behavior

I have a problem under Windows 8.1 when I try to use internet through an Android USB Tethering... I have a nexus 5 and when I enabled the USB Tethering, it works fine (I can navigate and use ...
0
votes
3answers
2k views

AcroRd32.exe Maxes Out Core

My CPU usage hit 100%. Process Explorer shows two instances of AcroRd32.exe. Each one is maxing out 1 core. But, there is no Adobe/Acrobat Reader window showing. I had closed the windows earlier. ...
0
votes
0answers
40 views

How can I tell if antivirus is causing performance issues for CPU intensive tasks on a machine?

My company publishes simulation software that regularly performs prolonged CPU (and GPU, and occasionally I/O) intensive tasks. Our userbase are engineers, of whom some are embedded in large ...
0
votes
0answers
30 views

How to limit the CPU usage of one web hosting in Apache

I know that the application pool of IIS can limit the CPU usage of a website,how to limit the CPU usage of one web hosting in Apache,I tried cpulimit,it only limits the CPU usage of one process which ...
3
votes
1answer
39 views

System time moving slower by high CPU usage

My computer used to have no problems staying at high CPU usage, until a few days ago, which I noticed that this would make the system time move slower. There is around 15 to 30 minute lag for each ...
-1
votes
2answers
53 views

Lag on Windows 7 whenever typing [closed]

Whenever I type in windows 7 my cpu usage increases dramatically and my words "cant keep up". I have tried using another keyboard and using ccleaner however none of this works. I don't think this is ...
1
vote
1answer
605 views

MayaBench (rendering) only using 25% CPU; Other software uses 100%

I have a Intel 2600K 3.4Ghz OC @ 4.8Ghz ASRock Z68 Extreme 4 Mobo 16GB 1600mhz DDR3 memory. When I run MayaBench for rendering, I get this wierd bumpy pattern. while other softwares (such as ...
1
vote
1answer
1k views

ntoskrnl.exe!_misaligned_access eats a lot of CPU when idle

Please advise what might be causing the unnecessary cpu use described below. Symptoms: When the computer is left idle, a system process starts to eat about 30% of the CPU. If any key is pressed or ...
1
vote
1answer
85 views

How to view total CPU and memory usage of per system user in Linux

I know the top command to see the process of CPU and memory usage, but some users of the system can generate a lot of processes, if I wanna know total CPU and memory usage of an user,I must count it ...
0
votes
3answers
5k views

Google chrome opening to black screen Windows 8.1

Using google chrome version 41, downloaded it yesterday. Now when I click the icon in the task bar it opens to a black screen. Moving the cursor to the top I get a line that shows a red X and allows ...
0
votes
1answer
104 views

Force ffmpeg to use 100% of CPU

I'm using ffmpeg to extract frames from video, but the process is so slow. Looking at CPU usage I see that ffmpeg use only 50% of my CPU. I've tried also to add -threads 4, but it seems it doesn't ...
0
votes
0answers
52 views

Excessive cpu usage of process : Intel(R) Dynamic Platform and Thermal Framework Utility Application

I bought a new pc (a notebook) but now I have a problem, there is installated a program called "Intel(R) Dynamic Platform and Thermal Framework Utility Application". It often uses the 20/30 % of my ...
1
vote
1answer
358 views

Windows 7 - High CPU usage during idle time [duplicate]

I just noticed when I'm away from my laptop running Windows 7 Ultimate 32-bit, after a while CPU fan starts high speed working, but anytime I return back to PC with first input by mouse/keyboard the ...
49
votes
4answers
36k views

What does load average mean in unix/linux?

If I run uptime, I get something like this: 10:50:30 up 366 days, 23:27, 1 user, load average: 1.27, 2.06, 1.54 What do those numbers on the end mean? The man page tells me it's "the load ...
1
vote
2answers
53 views

Load average and processor count

If I have a CPU with 8 cores, is it okay to have a consistent average load of 2.5? Or should it always remain below 1, irrespective of the number of processors / cores?
48
votes
12answers
59k views

How can I produce high CPU load on Windows?

For testing purposes I need to generate high CPU load on a Windows Server 2003. I cannot install any software but have to make do with what Windows provides. What would be the best way to achieve ...
0
votes
1answer
72 views

Cpu usage Oscillation

I run simulations on a public computation server. Due to the nature of the simulation its CPU usage oscillates in a wide range (0-60%). Does this affect the speed of other people's work. The overall ...