Questions tagged [cpu-usage]

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

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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 ...
Scott's user avatar
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23 votes
12 answers
135k 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 ...
Leonardo's user avatar
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23 votes
2 answers
13k views

Is it okay to have 100% CPU usage constantly?

I often do 3D rendering in the background which consumes 100% of the CPU (I lower the priority of the process so that it does not hinder any tasks I am working on). My concern/question is whether it ...
kaivalya's user avatar
  • 233
21 votes
1 answer
63k 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 ...
user avatar
331 votes
12 answers
123k views

Determine which tab in Firefox is using CPU resources?

Is there anything in the current Firefox similar to the Task Manager in Google Chrome? (Shift + Esc) There is something that occasionally takes up enough CPU to make Firefox unresponsive - but with ...
chris's user avatar
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12 votes
3 answers
15k views

High CPU usage by "System" and "System interrupts" (caused by ACPI.sys)

I have a laptop, which was running Windows 8.1 x64 without any problems. Now with Windows 10 x64 installed, Task Manager constantly shows unusual CPU usage by "System" and "System interrupts". To ...
Brane's user avatar
  • 569
12 votes
3 answers
20k views

Task Manager shows 100% CPU utilization, but nothing in process list does

I'm using WinXP, and I notice that in the Task Manager, on the Performance tab my CPU usage is 100%. But When I go to the Processes tab, and sort by CPU System Idle Process is taking up 90%. I've ...
nathan's user avatar
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17 votes
5 answers
79k views

CPU usage at 100% for several hours

If I use a processor at 100% constantly for several hours, can that damage the machine?
bzak's user avatar
  • 311
11 votes
3 answers
12k views

After Windows 10 Fall Creators Update, a svchost.exe instance is constantly using CPU time

Since installing the Windows 10 Fall Creators Update, I have a svchost.exe process that is constantly using about 14​ % of CPU time: This svchost.exe instance is responsible for hosting three ...
fefrei's user avatar
  • 397
5 votes
1 answer
4k views

System and compressed memory and system interrupts takes 40% of the cpu

I searched a lot about this online and couldn't find a solution, I turned off fast startup as many answers have suggested. But it didn't work , The problem happened after I connected a secondary hard ...
lasan's user avatar
  • 149
80 votes
4 answers
271k views

Windows Update doesn't work and consumes 100% of CPU (Win7 SP1) [duplicate]

I've observed a strange behaviour with Windows Update (Win7 SP1). The process svchost is consuming an entire core of my Virtual Machine (VirtualBox) doing nothing (i.e., there is no network traffic ...
cantoni's user avatar
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23 votes
7 answers
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Windows update KB2952664 (Compattelrunner.exe) cannot be uninstalled from Windows 7

Update KB2952664: Compatibility update for upgrading Windows 7 This update performs diagnostics on the Windows systems that participate in the Windows Customer Experience Improvement Program....
mins's user avatar
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61 votes
12 answers
59k views

Can I run my CPU at 100% usage for a long time?

I have a Dell XPS 15 9570, 32 GB ram, 2.2 ghz and 6 cores. When i use an application (The parsim command on MATLAB) (for more details) then my fan starts running fast , during this my PC doesn't seem ...
aadil095's user avatar
  • 737
4 votes
3 answers
5k views

Finding CPU usage of a service

Because my laptop fan was spinning up for no reason, I had a look at the CPU usage and I see svchost with 12.5% CPU, which is basically a full core. Now, I'm aware that svchost runs services and I ...
Thomas Weller's user avatar
40 votes
4 answers
69k views

What is the cause of a high CPU usage of 'system and compressed memory' in Windows 10?

There is an observation to be made for Windows 10 on my laptop running with 24G memory available, and 2.5G used. There is no 'memory pressure'. Other questions have looked at memory consumption (...
Raymond Burkholder's user avatar
20 votes
3 answers
5k views

How to diagnose abnormal CPU usage by svchost.exe? [duplicate]

I've got a laptop with a Win 7 32-bit system powered by a dual-core Pentium (it's a 2010 laptop). Sometimes it works fine, but usually it idles at 100% CPU load. The CPU is consumed by two svchost.exe ...
Violet Giraffe's user avatar
17 votes
1 answer
99k views

What is the impact of running the CPU at 100% for long periods at a time? [duplicate]

Possible Duplicate: Is it ok to have 100% CPU usage constantly I recently upgraded computers and with this upgrade I decided to try Seti@Home to run in the background. I was watching the CPU and ...
L84's user avatar
  • 3,871
7 votes
8 answers
46k views

CPU Speed stuck at 0.78 GHz, How do I increase it to its base speed of 2.30 GHz?

My 1yr old laptop, HP Pavilion 15 has it's CPU, Intel i5-8300H stuck at 0.78 GHz whenever it's plugged and charging, and the moment I remove the charger plug or switch it off, it increases suddenly ...
GeassDragon's user avatar
85 votes
4 answers
119k views

Why is the CPU usage reported by top in Linux over 100%?

I've seen the CPU usage go over 100%. How is this possible? Is it because I have four CPU cores, so 100% isn't really the max? Also, when a program does this, what else can I do in top besides using ...
tony_sid's user avatar
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75 votes
4 answers
67k views

What does load average mean on 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 average ...
John Fouhy's user avatar
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28 votes
7 answers
105k views

CPU Constantly at 100% In Task Manager, But Not in Process Explorer

Starting yesterday, I have a very odd problem on my Windows 10 desktop-- my CPU is constantly running at 100% (according to Task Manager), and it isn't throttling down. Because of this, it's ...
Andrew M's user avatar
  • 955
22 votes
2 answers
23k 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 ...
dan_s's user avatar
  • 603
3 votes
7 answers
12k views

How to fix the "Firefox using max CPU" problem?

Every now and then while browsing, my Firefox CPU usage shoots up to the max possible (that's 50% for my dual processor laptop). It remains at max usage even when I close all the tabs. In fact, the ...
Nikhil's user avatar
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1 vote
1 answer
17k views

Program that logs the CPU usage in Windows 7 [duplicate]

Is there any program that logs the CPU usage of all programs? I want to know, over a period of one month, which programs use the CPU more intensely.
user1146320's user avatar
0 votes
1 answer
13k views

Windows 10 CPU Usage at 99%. Processes not showing correct CPU usage [duplicate]

On a Windows 10 16299.192 desktop system task manager always shows 99% usage. If I try killing the highest usage program all others suddenly show their CPU usage increasing to fill the gap, as if the ...
LostWander's user avatar
64 votes
5 answers
40k views

Chrome 100% CPU usage, again - software_reporter_tool.exe

software_reporter_tool.exe belonging to Chrome running at 100% cpu, fan full speed. Deleting it doesn't fix anything, because it gets redownloaded again! Disabling "Protect me from bla bla" doesn't ...
waaaaaat's user avatar
  • 677
32 votes
3 answers
90k views

Is there a command in Linux to know the processor number in which a process is loaded?

Is there any command in Linux to figure out, given a process, which processor the process is running? I am interested in figuring out the CPU busy and CPU idle time of that processor.
kumar's user avatar
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25 votes
2 answers
123k views

How to increase Python's CPU usage

I use Python to execute some algorithms and no matter which Python I use, and I have tried many versions, the CPU usage goes to 25% max. Why doesn't Python take advantage of the rest of my CPU ...
user avatar
17 votes
1 answer
25k views

OneDriveSetup.exe causes high CPU usage

On my Toshiba Encore 8 Tablet I noticed that the CPU usage is very high. In Taskmgr / ProcessExplorer, I can see that OneDriveSetup.exe is hogging 1 CPU cores heavily for hours. How an I solve this ...
magicandre1981's user avatar
10 votes
5 answers
6k views

why does Virtualbox use 15-20% CPU when VM is paused?

I run VirtualBox 3.1 on Ubuntu with a Win XP guest. I have noticed to my surprise that when I pause the VM (its screen grays out) VirtualBox continues using 15-20% of the host's CPU. Is this normal ...
laramichaels's user avatar
7 votes
1 answer
26k views

What does CPU usage for a process actually mean

Assume the computer has a single core - what exactly does it mean for process A to be running at 100% CPU capacity vs (lets say) 10% CPU capacity. If the CPU was 2.0 GHz, does that mean in a time ...
Dave Stibrany's user avatar
7 votes
4 answers
14k views

CPU makes an electric leak like sound

For a while my computer have been making a electric leak like sound whenever the CPU usage gets high. However, lately it started to make it more often. For example with anti-virus searches and malware ...
dagcilibili's user avatar
6 votes
8 answers
50k views

Why does the CPU usage reach 100% when laptop is plugged in?

I have an HP Elitebook 8440p with Windows 7 Ultimate, i7 Processor and 8 GB RAM. For the last couple of days, when I plug-in my laptop for charging, the CPU usage shoots up to 100% and remains there ...
Mayank's user avatar
  • 2,218
5 votes
2 answers
6k views

Assign an individual core to a process

What I'm trying to implement is to run a python script on it's own core on Raspberry Pi 2 with Debian. One can use taskset to bind a process to particular core. But I need this core to be free of OS's ...
Leonid's user avatar
  • 153
5 votes
2 answers
12k 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, ...
badp's user avatar
  • 3,707
3 votes
5 answers
19k 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 it ...
user avatar
3 votes
4 answers
7k views

Cannot get rid of Win 10 'system and compressed memory' high CPU, any suggestion?

first post here, I have read all what I was able to find (and not only here) on the topic but nothing solved my case up to now, I have something like 30 years experience with PC building/servicing ...
NeroMetalliko's user avatar
2 votes
3 answers
22k views

Why does my CPU Usage reach 100% too often?

I'm using a dual-core processor and often see my CPU usage reaches 100%. I realize this may happen if I'm running too much applications, so when I know the computer starts to run slowly, I start to ...
deathlock's user avatar
  • 323
1 vote
2 answers
2k views

Will a CPU upgrade speed up my web browsing? How to tell?

My CPU model is 2 and a half years old now, released Intel Q4'2010. How can I determine if getting a new CPU will improve how fast I surf the Internet, versus getting a better ISP subscription?
William C's user avatar
  • 2,479
1 vote
1 answer
3k views

CPU Utilization in Task Manager

I have a question about the graph of CPU utilization in the Task Manager's performance tab. What does, for example, 25% 1.8 GHz mean? What is the scaling for the percentage? If there is a thermal ...
Ovl0422's user avatar
  • 13
1 vote
2 answers
14k views

Why is IE using up so much CPU?

I have been trying to find out why IE uses up so much processing power, but unfortunately all I have been able to find is various ways to fix it. My problem was caused by leaving the IE open on our ...
Ben's user avatar
  • 1,226
1 vote
0 answers
219 views

ACPI.sys+23270 Thead using 12% CPU Usage [Win10] [duplicate]

I've seen other posts about this but since I have a more information about the situation I'm thinking I could use some help to isolate the issue rather than reinstalling every single driver the trial ...
Shayna's user avatar
  • 111
0 votes
1 answer
5k views

Why does my CPU utilization differ in Hardware Monitor and Task Manager?

My computer is extremely slow right now; after running CPUID HW monitor, this is the screenshot: Here is another screen shot. I am looking for value of CPU fan to see if it's detected by the software ...
user4951's user avatar
  • 4,695
0 votes
4 answers
823 views

XP 100% CPU on Login, by random processes

I have a serious issue on my Windexs XP machine. When I start it up it takes ages to login, then when I bring up task manager I find that its running at 100% CPU However, the process taking the CU ...
Ro.'s user avatar
  • 121
0 votes
1 answer
1k 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 could not stop doing stuff. It must constantly run/execute something. Question 1) I wonder then, how come there is a ...
Fresco's user avatar
  • 101
0 votes
1 answer
184 views

Get complete stats of process started/terminated during login of user account

When I login, I notice many process quickly start and terminate in task manager. But it happens very fast and I cannot save details about them (like process name, command line, CPU usage,..) How can ...
user avatar
-1 votes
1 answer
499 views

CPU under load despite removing all process affinities [duplicate]

I've installed Process Lasso and in All processes tab, set all affinities to 1-7, meaning that all the processes can be start on all my CPUs except the first one. Yet, there is a huge load on my first ...
arash's user avatar
  • 55
91 votes
13 answers
257k 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 ...
Morgon's user avatar
  • 911
48 votes
3 answers
98k views

What is a CPU tick?

Question: How is a CPU tick calculated and what does it represent? Does a single tick equate to 10 miliseconds thus if some thread reported not called for (5 * 10 ticks = 500 ticks) does this mean ...
Aaron's user avatar
  • 1,448
25 votes
3 answers
21k views

opendirectoryd consumes 40% of CPU

I have a MacBook Pro with Lion 10.7.2, 2.26 GHz CPU and 2GB DDR3 RAM. If I call top -o cpu the /usr/libexec/opendirectoryd process consumes more than 40% of CPU. $ ps aux | grep opend ...
juanpablo's user avatar
  • 7,134