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

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10
votes
2answers
964 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 ...
10
votes
1answer
16k 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 ...
9
votes
3answers
13k 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 ...
8
votes
4answers
5k views

CPU usage at 100% for several hours

if I use the processor to 100% constantly for several hours, Does that will damage the machine?
31
votes
6answers
16k 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, ...
5
votes
4answers
3k 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 ...
3
votes
7answers
6k 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 ...
1
vote
2answers
1k views

Media player classic starts at boot up CPU 100% not listed in msconfig. What is going on?

Every time I boot windows, media player classic starts running in the background (no actual MPC window opens) and hogs the CPU at 100% until I kill it. In process explorer the parent is explorer. I ...
38
votes
3answers
23k 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 ...
8
votes
4answers
10k views

Linux: command 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.
8
votes
10answers
93k 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 ...
5
votes
1answer
9k 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 ...
2
votes
1answer
251 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 ...
5
votes
8answers
9k 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 ...
4
votes
2answers
1k views

How do I see the CPU load of a server?

What is the command to see CPU load of a RedHat Linux server?
3
votes
3answers
2k views

cpu usage nearly 100 constantly windows xp sp3

When running some heavy applications like games or virtual box for some time.. the cpu usage is normal for some 15 mins and then suddently cpu usage increases. even after i quit the heavy apps and ...
2
votes
3answers
4k views

What's more harmful to a CPU? High load or high temperature? [duplicate]

Possible Duplicate: CPU usage at 100% for several hours Is it ok to have 100% CPU usage constantly I wonder which case is more harmful: high percentage of usage (>90%) vs high temperature ...
0
votes
1answer
827 views

disparity between `top`'s given CPU % and process CPU usage total

I've noticed that there are sometimes (large) differences between the reported total CPU usage and a summation of the per-process CPU utilization given by apps like top and wmtop. As an example: I ...
0
votes
4answers
670 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 ...
33
votes
12answers
34k 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 ...
14
votes
2answers
20k 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 ...
13
votes
3answers
11k 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 ...
4
votes
5answers
9k views

Reduce Mac OS X's Flash CPU usage

I have been experiencing high CPU usage (138%) on my MacBook, while looking at flash videos on the internet with the Firefox browser. Mostly this usage makes itself noticeable by the loud noise of the ...
6
votes
4answers
2k 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 ...
5
votes
2answers
3k views

svchost consuming more than 50% CPU all the time in windows 7

I'm using windows 7 ultimate. svchost containing DCOM Server Process Launcher Plug and Play Power services is consuming more than 50% of CPU for most of the time. I found this blog post: ...
3
votes
3answers
6k views

Writing a CPU/RAM usage log over a period of time to file on CentOS

I'm looking for an application or line of code that would let me observe a process, save the info in a number of variables, then put the gathered info on a file. I've been trying with variations of ...
3
votes
5answers
2k views

What is Firefox doing?

If one watches Firefox's CPU consumption, one can see it consuming large amounts of CPU even while it's not being interacted with. On lower-spec computers, this can cause performance problems that ...
2
votes
3answers
2k views

Windows 8 Task Manager: how to enable the “CPU Time” column in the Processes tab?

Up until Windows 7, the Processes Tab of the Task Manager would allow you to add the CPU Time column (see for instance Task Manager's possibilities you may not know): to show it, choose theView ...
2
votes
2answers
672 views

Power to USB lost when computer is under load

Any time my computer uses 50+% of its CPU for more than a few minutes, the power to my USB ports seems to be shut off, and then the CPU spikes to 100% and stays there. (syncing my iPhone is what was ...
1
vote
1answer
164 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 ...
1
vote
2answers
4k 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
2answers
2k views

Shell script that monitors CPU usage and terminates services with high CPU utilisation

We have a Windows 2003 server where 3 services are running constantly. Sometimes these services consume over 90% CPU. Restarting these services returns normalcy. I need a script/program that will ...
0
votes
1answer
5k views

explorer.exe hogging CPU, slow folder browsing

My computer is snappy when I log in from a fresh reboot. Within a short while, it becomes almost unusably slow depending on what I want to do. In particular, any Windows-y actions are slow while ...
6
votes
3answers
3k 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 ...
5
votes
1answer
2k 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 ...
3
votes
1answer
2k views

Root cause for high CPU usage; which measurement to trust more: Windows Task Manager or Process Explorer?

Consider this Windows 8.1 machine (in-place upgrade from Windows 8) with differing reports on its CPU usage. The machine is idle, and has been for 3 days. There are no CPU intensive tasks running ...
3
votes
2answers
3k 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, ...
3
votes
5answers
800 views

Why are my computer graphics twice as fast after I doubled my computer's ram?

I doubled my computer's RAM from 2 GB to 4 GB of 800 MHz DDR. Why would it make Windows 7 desktop animations twice as fast (2x) and all games twice as fast and unplayable? Is there any way to add my ...
3
votes
1answer
788 views

iTunes CPU usage

iTunes on Mac OS X 10.5 is consistently using 10-11% of the cpu when playing one song. I understand that iTunes is a resource hog and my iTunes library is pretty big but could any other programs be ...
2
votes
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. ...
1
vote
0answers
116 views

Windows 8.1 - System process uses 1 core up to ~90% constantly

Asus N550JV comes with Windows 8 installed. I prefer 8.1 so I installed Windows 8.1 on my machine. Downloaded all the specified drivers on Asus Support Page, not to mention my whole system is up to ...
0
votes
1answer
180 views

Skype makes my processor thrash at about 25% and my fan stay on

When I start Skype, task manager shows skype.exe constantly using 25% CPU and the fan on my laptop comes on and stays on. My default browser is Chrome. How can I stop this happening?
0
votes
1answer
2k views

Windows 8.1 Pro - CPU Usage Stays at 100%

About an hour ago, I noticed that my laptop had gotten noticeably slower. My laptop is extremely fast, so this extreme decrease in performance prompted me to look at the task manager. In the task ...
0
votes
1answer
377 views

XP 100% CPU on Login, by random processes [duplicate]

Possible Duplicate: 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 ...
0
votes
5answers
5k views

Why does my CPU fan race when running videos or virtual machines?

I have: Windows Vista Home 32-Bit SP1 Intel Celeron CPU 3.06 GHz 2 GB RAM I installed the operating system about a year ago, has been working fine. However about 3 months ago, the CPU fan has ...