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

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696 views

Windows XP - Explorer CPU spike and freeze

System: Windows XP SP3, Intel i3 Issue: Windows Explorer process spikes my CPU usage to 50% and freezes. Only resolution is to kill the process in the Task Manager and restart manually. ...
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1answer
402 views

Why does top report more than the theoretical maximum CPU usage of a machine?

I would like to know why I have a process being able to report a usage line like: PID COMMAND %CPU 248 Xcode 983.5 … in top on a quad core CPU? I understand it's wrong, but how come? I'm ...
11
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2answers
6k 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 ...
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1answer
328 views

How to prevent my Windows 7 to hang when running intense calculations on all cores?

When i am using all my 4 cores, its really slow to open any folders or even right click on desktop, or open any programs, and so on. Is there any way to prevent my Windows 7 from using 100% of my CPU ...
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2answers
3k views

What does “thread” mean as related to CPUs? [duplicate]

Possible Duplicate: What are threads, and what do they do in the processor? I know a process can have multiple threads, on my Windows 7 machine each process has over 10 threads in avg. ...
3
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1answer
4k views

How Do I Investigate a CPU Usage Spike Without Being Present?

I have a server that's mysteriously using up a lot of CPU late at night, when it shouldn't be under heavy load. This causes some database calls to time out, and I've set up some alerts in PerfMon to ...
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2answers
5k views

How do I troubleshoot high CPU usage?

My CPU usage is very high by default. As soon as I starts a program it touches the maximum. After some time it becomes normal. I have a doubt that my disk is infected. So I tried to install ...
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0answers
264 views

Linux: X11 is using up 50% of one of my CPUs and lagging terribly

I have been running my Ubuntu Linux Machine recently on powerful hardware (much more powerful than my last machine at any rate) and I have noticed that after some time all of a sudden X11 starts to ...
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0answers
649 views

Is it normal for WmiPrvSE.exe to consume 10% CPU non-stop?

Resource Monitor shows Average CPU for WmiPrvSE.exe is 10%. Is that normal? This is just a 64-bit Vista laptop with an Intel P7550 (Core 2 Duo @ 2.26GHz) and 4G RAM. It's not running anything special ...
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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... ...
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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 ...
3
votes
1answer
2k views

OS X Lion: What is uninstalld?

Every now and then, since I installed Lion on my Mac, I have noticed that a process called uninstalld has been running and using a lot of CPU time. Does anyone know what it does? I haven't tried to ...
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1answer
290 views

CPU usage and frequency as a tray icon

I'd like to display a CPU usage / frequency graph like the Resource Monitor does: in a tray icon like Process Explorer does: In particular, I'd like to see that blue line indicating the ...
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votes
3answers
4k views

CPU usage goes up while computer enters into screensaver/screen goes dark

Computer/Laptop: Lenovo T500 When I leave my PC, it turns off the display after X minutes. That's fine. However, since I use "Proccess Explorer" (SysInternals) there is a bit of a history in my ...
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vote
2answers
120 views

Game crash causes computer to perform poorly

I started FIFA11 just as any other day. But now the FPS was very low. I saw on the desktop gadget that all 4 cores on my i5 were at 100%. I tried to play nonetheless but it was unbearably slow. So I ...
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1answer
722 views

Peeking inside Firefox - what's maxing out the CPU

I am having a Firefox with plenty of add-ons installed. Sometimes Firefox get stuck with high CPU usage on the pages having no Flash. I'd like to solve what's causing this in a more professional ...
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2answers
2k views

Force specific CPU core usage in programs on Windows 7

Is there any way to force a program to run on cpu1 rather than cpu0 given that I know that there are at least two cores? I'm compiling C++ with code::blocks on Windows 7 x64
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1answer
961 views

Windows 7 , CPU usage hikes up to 100%

I am having this issue of lag in Windows 7 Professional, the CPU usage is 100%, even if I am only watching video on GOM player, nothing else is open, but the usage is 100%, or if I open Firefox/Chrome ...
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0answers
98 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 ...
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2answers
406 views

Windows 7 CPU usage after update

After windows 7 updated and restarted it shows 98-100% CPU usage in task manager. But, it doesn't show any heavy process or thread using it. Are they hidden processes that the task manager doesn't ...
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votes
4answers
2k views

100% Finder CPU usage

Randomly, I wasn't doing anything specific — my system starts getting sluggish. I check the activity viewer — wow, Finder is at 150% CPU! This is what I have tried so far: Trashing ...
0
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1answer
1k views

Tracking down System CPU usage

My System process (Not system idle process) is using 5-10% CPU constantly. Using Sysinternals process explorer, I've identified the offending thread as having an ID of 8 and the following stack ...
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3answers
1k views

I need a tool like Task Manager that shows top applications that are taking CPU

I need a light weight tool (somehow like Task Manager) or desktop gadget that shows top applications that are taking CPU. Task Manager is not so good because it lists ALL applications, and that is a ...
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2answers
4k views

Determine which Opera tab uses 100% CPU?

Sometimes a tab gets stuck at using all CPU time it can get. I know theres a way to check which one for Chrome or Firefox -- is there a native method and/or extension to do this in Opera? Checking ...
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2answers
2k 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 ...
3
votes
1answer
823 views

Windows hangs on clicking/copying large MKV file

I have a 2.9GB MKV file, unzipped from a .RAR archive, that causes explorer.exe to take up 100% CPU when I select it by single clicking. Also, when I attempt to copy and paste it, the copy dialog ...
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votes
5answers
376 views

CPU permanently at 65%

Windows XP, SP3, Intel Core 2 Duo Here are the symptoms: Since a couple of days is my System task permanently at about 35% When I want to Turn Off the computer then the Explorer needs to be force ...
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votes
4answers
2k views

Why is my CPU usage broken in Process Explorer?

On my system (Windows 7), it seems that Process Explorer is reporting the wrong CPU usage: When Firefox is running, I constantly get 30%+ When I kill Firefox, I still get about the same CPU usage ...
8
votes
2answers
7k views

How to decrease the CPU usage when running Virtual Box?

I am facing an issue with 100% CPU usage under my system when running VirtualBox. Here are some further details: My System Information: CPU 1 name: Intel(R) Pentium(R) Dual CPU T2310 @ ...
7
votes
5answers
11k 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, ...
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votes
3answers
219 views

Why do installers use so much CPU time?

I've noticed when installing large pieces of software on Windows (Visual Studio, SQL Server, Office, and things of that nature) the installer tends to hang for large periods of time at or near 100% ...
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vote
1answer
802 views

Macbook pro strange fan and CPU activity behavior

My 2008 Macbook Pro Unibody 15" runs almost perfectly, but since one month or so, fans start to make noise or get activated in stupid situations where I am not doing really anything (just browsing the ...
4
votes
1answer
2k views

Why did my system suddenly start consuming 100% CPU all the time and how do I troubleshoot it?

Recently, my friend's PC came to a grinding halt. It was quite messy and the system was full of cruft so I decided to do a clean XP Professional install. The system is a Turion64-based HP laptop ...
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votes
1answer
236 views

showing cpu eating process

when my mint laptop tries to connect wireless, i noticed the increase in load but I dont see a process in top. How we can find these processes. top - 16:01:09 up 11 days, 6:08, 2 users, load ...
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votes
1answer
1k views

Xorg is using 80% cpu usage

Xorg is constantly using about 80% cpu power, on a single core. And I have no idea how to get it normalised I'm running Linux Mint 10 on an HP Envy 17 laptop with an AMD/ATI card.
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2answers
174 views

Is it possible to execute a new application if the CPU Utilization of a computer is 100%?

The CPU Utilization of a computer is 100%. Is it possible to execute a new application under the above condition?
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2answers
2k views

If “top” indicates CPU is spending 10% on %wa (iowait), does that mean the CPU is idle?

I am referring to the Linux top command. If it indicates 10.4% was spent on wa, does that mean 10.4% CPU was available for other processes? top - 09:40:45 up 178 days, 34 min, 1 user, load ...
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2answers
956 views

Is there a meaningful SINGLE UNIT measure of computing power?

A discussion has arisen on the English Language SE site about the term computing cycles, where I personally think normal usage is clock or processor cycles. Obviously different processor & ...
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3answers
1k views

Make Sleep/Hibernate Timer depend on CPU-user / download? [closed]

I am usually letting my (Lenovo, Win 7 Ultimate x64) laptop go to sleep after 15 mins, which is just perfect for me. With one exception: Is there a tool or other tweak, that would prevent going to ...
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3answers
8k views

Possible Virus? CPU usage always 100% and Can't Connect to SENS

I've had this error a while and I keep looking but can't find a solution. Problems: - Every time I start my computer it 'Cannot connect to system event notification service'. This means non admin ...
0
votes
1answer
801 views

Windows 7: Full usage of one CPU core by WmiPreSE for several seconds after resume or network changes [duplicate]

Possible Duplicate: Why does WMI Provider Host ( WmiPrvSE.exe ) keep spiking my CPU ? Every time my computer resumes from sleep, connects to a network, or disconnects from a network, one ...
1
vote
1answer
371 views

Tool for monitoring a virtual machine remotely

We are running VirtualBox and phpVirtualBox for a few test servers, recently we have had stability problems on some of them, does anyone know of any remote monitoring tool (open source/free prefered) ...
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2answers
183 views

Can I cpulimit fsck without problems?

My special laptop tends to overheat and shutdown under Linux unless I cpulimit demanding programs. Would there be a problem with using cpulimit to limit fsck? Basically, the target process, which ...
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 ...
0
votes
2answers
1k views

OSX CPU/Mem monitor application/widget

I knew someone that had a some app running at the botton left of his screen near he's dock, which monitored cpu usage at least. It had to green bars, prob one for each core. I'm wondering if anyone ...
0
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0answers
298 views

Program to monitor processes with high CPU usage and memory consumption in realtime [duplicate]

Possible Duplicate: Software to monitor a CPU usage and RAM usage of a process? I need a program that monitors the top five (or similar) processes according to CPU usage and memory ...
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3answers
810 views

Limit user to one CPU core in Windows 7

I let my family members use my pc over rdp to play their flash-based games as their laptops overheat if they use them directly. I have it setup so I can use the pc at the same time as them. The pc has ...
2
votes
1answer
384 views

System idle process

When the cpu isn't doing anything, it runs the idle process. I heard that this process looks for programs that are waiting in the queue so that the cpu can run them. Is that all it does? I am also ...
0
votes
1answer
3k views

Capture CPU usage over a 24 hour period on Windows XP [duplicate]

Possible Duplicate: How to log processes throughout workday? I would like to capture CPU usage on my Windows XP over a 24-hour period and generate a report in Excel. The granularity needs ...
2
votes
1answer
863 views

Limit CPU usage for a user in Ubuntu

I want to limit the percentage of CPU a user who ssh to my comp can use like say only 25% cpu usage at max. How do i do this in ubuntu ?