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

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3
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2answers
6k 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
101 views

Firefox Consumes A Lot Of RAM After Security Update

All was okay before 3.6.18 but after security update it started eating a lot of RAM and spiking frequent high CPU usage. Here are screenshots: Currently have running Internet Explorer 8.0, Chrome ...
2
votes
1answer
5k views

Windows Processes Utilizing Too Much of the CPU

I have a 4yr old Dell Vostro 1540 laptop with an i3 M380 and 4GB RAM. I only perform light tasks e.g. web browsing, document reading & editing, light Photoshop...,thus I don't need a newer laptop. ...
3
votes
2answers
2k 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... ...
-2
votes
0answers
34 views

Unusual sudden high CPU load from Mysql - above 900%

I have been experiencing high CPU load, caused by Mysql v5.6.23. I have 12 cores CPU with 64GB memory on Centos 6.6 Cloudlinux. On checking on processlist showed mostly reads and did not appear to ...
4
votes
1answer
4k 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 ...
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
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0answers
22 views

Can I raise the CPU usage of a application on Ubuntu?

I'm using GNU/Octave a lot, and sometimes I want to leave my computer alone doing some calculations while I'm working with something else (somewhere else). Using the system monitor, I see that Octave ...
5
votes
2answers
383 views

99% CPU on Win8.1, Can't find offending process

For the last several weeks my laptop is running at 99% CPU, and have been unable to find the offending process. Task manager shows 99%, with no one process using all the CPU, it cycles between ...
2
votes
1answer
59 views

nusb3xhc.sys high CPU usage

Lately, I've been observing that my CPU often have higher load than it should. After digging, I found a very weird and specific problem. The facts : I have a Vaio Z21 (VPCZ21C5E - Core i7 - Win7 ...
3
votes
1answer
1k views

Task Manager shows higher total CPU usage than the sum of all running processes. Hidden process?

In Windows Task Manager and AVG Task Manager (included in TuneUp Utilities), I see that the sum of all the running processes is much lower than the total CPU usage shown in "performance" tab. Does ...
0
votes
1answer
312 views

CPU frequency is very low and system is very slow too in core i5 vaio laptop

Sometimes I notice that system is very slow and when I see task manager, these are information in performance tab: Utilization: 8% Speed: 0.2 Ghz Maxsimum speed: 2.5 GHz Hardware details are: ...
42
votes
12answers
50k 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 ...
3
votes
2answers
3k views

IPHLPSVC High CPU in Windows 8 x64

I was experiencing consistent high CPU usage in Windows 8 Pro x64. The cause was svchost running at a constant 25% CPU, even at idle. I checked the services that the svchost was running, and toggled ...
0
votes
0answers
36 views

Strange CPU Usage History

My CPU history graph on the task manager is acting strangely. The fan also seems to be "revving". Here is an image of what is happening. This is my laptop and the processor is Intel core i5. ...
0
votes
1answer
40 views

How to get the CPU graphics usage?

My CPU also provides graphics processing for my system. It's easy to know the CPU's core usage separately by using a utility such as top (etc.), but how to get the CPU's graphics usage?
0
votes
0answers
225 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 ...
53
votes
6answers
25k views

Determine which tab in Firefox is using CPU resources?

Is there anything in the current Firefox 3.x similar to shift-esc in Google Chrome? There is something that occasionally takes up enough CPU to make Firefox unresponsive - but with multiple windows, ...
3
votes
3answers
8k views

QuickLookSatellite MAC OS, High CPU Use

I have consistently been having a problem with my computer overheating due to the process QuickLookSatellite-general using 100+ CPU use. (Please see images attached.) On googling I found this ...
1
vote
1answer
121 views

High CPU core usage from System Interrupts [duplicate]

The CPU usage on my AMD Phenom II X4 820 hasn't gone below 25% in days, and I realized that it’s because my 4th core is constantly at 100% load. I have spent quite a while trying to figure out why, ...
6
votes
1answer
348 views

Chrome uses 100% cpu on youtube after update

Chrome 40 is using 100% cpu when playing youtube videos full screen My CPU is core i5 @ 2ghz with intel 4400 gfx card. it should be able to play them and I dont remember having this issue b4 Chrome ...
1
vote
1answer
37 views

Linux: Get CPU usage over past n minutes

I want a script to tell me the average CPU usage over the past 5 minutes (and repeat every 5 minutes, likely as a cron job). /proc/stat just has counters since system start, and I want to avoid ...
1
vote
5answers
7k views

How I can force Firefox to use all of CPU capacity?

Some programs like Firefox only use up to maximum 25% of all CPU (only 1 thread). However some programs like WinRAR, use up to 100% of all CPU. How can I force Firefox to use all capacity of CPU ...
0
votes
0answers
9 views

Variable sleep mode depending on cpu and/or network usage [duplicate]

Some applications on my Windows 7 PC support "shutdown on success". This is nice, but many won't have it. And I can't find a tool that controls multiple applications. My plan: Filezilla is Uploading ...
0
votes
0answers
52 views

High CPU in Windows 8.1 but can't access Windows backup as per previous answers

Since unfortunately needing to purchase a laptop while WIndows 8.1 is the norm, I've been plagued with problems of high CPU. After a month of use, I inadvertently logged into the Windows Store and ...
6
votes
3answers
18k views

Windows 7 CPU usage high for Explorer.exe and DWM.exe

I'm using Windows 7 Ultimate. I get a problem with two processes: explorer.exe and sometimes dwm.exe. The two processes tend to have a CPU usage between 20-30%. It only occurs when I play games on my ...
-2
votes
1answer
62 views

What causes System Idle Process to run down my CPU so much [duplicate]

I noticed my laptop was being a bit unresponsive so I checked the processes tab and found that System Idle Process is using nearly all of my CPU power. Why is this happening and how do I stop it?
0
votes
2answers
1k 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 ...
1
vote
1answer
106 views

How is CPU time measured on Windows?

I am currently creating a program which identifies processes which are hung/out-of-control, and using an entire CPU core. The program then terminates them, so the CPU usage can be kept under control. ...
0
votes
1answer
43 views

Why the number of CPU's so Large

I was installing Android studio and just so that I could delete the process I had my Task manager open and Saw that the CPU number was reaching 40 somethimes. How is this done, are multiple CPU ...
0
votes
1answer
26 views

Native command to get cpu usage by core

Is there any simple way to get CPU usage of each core in Debian in command line? I need it to be able to output current usage into stdout, not like htop (ain't even native!), that does not have ...
0
votes
0answers
97 views

“System” process high cpu usage

I've been noticing the cpu usage go up, back down for a couple minutes, and then go up again, and vice-versa... Not constant but it happened several times. (almost always up to 23% cpu constant when ...
2
votes
1answer
2k views

cpu load measure with hyperthreading on linux

How can I get the true usage of a multicore hyperthreading enabled cpu? For example lets consider a 2 core CPU, expressing 4 virtual cores. A single threaded workload would now show up as 100% in ...
0
votes
1answer
93 views

How to make sure windows 8 uses all computing power for only 1 process?

If I render an image in windows 8 commandline for example with blender/cycles my machine sometimes has a low cpu usage. The render task starts with 100% cpu usage, fall down after 2-4 hours to 25%, ...
5
votes
2answers
5k views

System (ACPI.sys) is always using about 15-20% of my CPU

I have a 13" Sony Vaio laptop (model SVS13A1C5E) and I upgraded it to Windows 8 with a fresh install, after upgrading I installed Win8 drivers listed here. Now I have a problem with the CPU usage (it ...
1
vote
4answers
11k views

HD 1080p .mkv videos don't play smooth. Is it a CPU, GPU, player or OS issue?

I have some .mkv 1080p videos but VLC can't play them smoothly. If I open the Task Manager, I can see that CPU is at 100%, because VLC uses as much as it can (95% or more). Then, I wonder Is it a ...
1
vote
2answers
1k views

Is there a program that can pause another program?

Here is whats bothering me. For example, I play two games, Assassins Creed and MW3. When my friends call me to play MW3 I minimise Assassins Creed to go and play MW3. But Assassins Creed still ...
13
votes
2answers
30k views

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
vote
2answers
145 views

How to stop windows explorer from taking up 70 percent of CPU?

So when I start up my computer, (windows 7), I always run task manager to kill any buggy programs if they occur. About a week ago, when I did so, I noticed that Explorer.exe was taking up 70 percent ...
1
vote
2answers
314 views

Running Ubuntu in VirtualBox under Windows 8.1 doesn't use CPU on 100%

I am running Ubuntu 14.10 64 bit under Windows 8.1 64 bit using VirtualBox 4.3.10. I have an Intel Core i5-2410M CPU, with 2 physical cores and enabled HyperThreading and virtualization. I have set ...
2
votes
0answers
306 views

Macbook Pro very slow despite normal memory and CPU usage

My MBP (OS X Mavericks) with 4G RAM has been slow ever since I bought it last year, but now it's getting ridiculous with the loading symbol showing up each time I open a new tab in Chrome or even ...
0
votes
1answer
201 views

Why is the CPU frequency always very high on my system?

I have a Windows 7 Pro x64 system used as a home server. Hardware: Core i5, 4670K (3.4 GHz) on an ASRock Z87E-ITX with the latest UEFI firmware. I've discovered today that the CPU frequency is too ...
3
votes
3answers
5k views

How is CPU temperature related to clock frequency and processor utilization? [closed]

While reading Dennis's reply, it makes me think about what determine the CPU temperature. Following is my understanding. The CPU temperature is solely determined by the CPU usage in a unit time. The ...
1
vote
1answer
44 views

mpstat user % is not accurate?

mpstat 1 11:01:57 AM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle 11:01:58 AM all 36.03 61.95 2.03 0.00 0.00 0.00 0.00 0.00 0.00 11:01:59 AM ...
4
votes
2answers
5k views

How to deal with a misbehaving dllhost.exe?

In the last few days, I've been having persistent problems by... something that causes a dllhost.exe process to spawn and consume minutes and minutes of CPU time. Procexp says: While fascintating, ...
6
votes
3answers
7k views

How to get I/O usage by process in Unix? [duplicate]

Possible Duplicate: Linux: Is there something similar to "top" for I/O? I am trying to do some CPU intensive operation on a Linux machine and it is showing very high load. I want ...
2
votes
4answers
1k views

How To Determine Which Tab In Internet Explorer Causes High CPU Usage?

I have high CPU usage in one of a few iexplore.exe *32 processes that i see in Windows Task Manager. Is there a way to identify which tab causing CPU spikes just like it is possible in Chrome? ...
3
votes
3answers
626 views

How can I ensure that exactly one process is running on a given processor/core?

I would like to do this so I can accurately speed test my processes, and just to be able to have the illusion of control. Maybe I want to reserve one processor for special programs. Maybe I want to ...
0
votes
3answers
314 views

Why does reducing CPU frequency improve battery life?

Shouldn't we have roughly the same battery life regardless of the frequency since the higher the frequency is, the faster tasks will complete so in the end the CPU, despite running at a higher ...
0
votes
0answers
81 views

Does running CPU intensive tasks wear down my computer?

I do a lot of statistical analysis in R (which uses a lot of CPU and RAM). Whenever I run my analysis, my laptop's fan runs at top speed. Monitoring tool shows that 1 of my cores runs at 100%, the ...