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

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1answer
197 views

Is it possible to sleep a process by force externally?

Say we have a game that runs 100% cpu time via its global loop. However, we need to 'sleep()' its main process externally so that it goes to lower cpu time. We do not have access to its source. Is ...
1
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1answer
159 views

Computer blanking out after 3 hours of video conversion

I've experienced this for the 2nd time around. But after I have done a video conversion from .mov to .avi. Using total video converter, the computer monitor doesn't display anything. I turn it off ...
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6answers
24k 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, ...
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5answers
863 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 ...
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3answers
2k views

About the External Graphics Card and CPU usage

We are Rendering 16 live Streams at our client machine through one of our applications and the resolution of the video streams are as 4CIF/MPEG4/25FPS/4000Kbits. The configuration of the client ...
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2answers
233 views

MySQL + Windows 7 + Quad Core = UI Thrashing

I'm running Windows 7 (professional) with an intel Q8400 and MySQL 5.1. Whenever I have heavy MySQL queries (eg. inserting or updating 10,000-40,000 records, which takes several seconds) my UI ...
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1answer
761 views

Task Manager: Overall cpu usage + idle process cpu usage > 100%

On Windows XP SP3, in Task Manager I assume that the "System Idle Process" is not counted as part of the overal "CPU Usage", therefore at any time the sum of both should be 100%, which seems to be ...
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2answers
4k views

Mac OS X Activity Monitor - what does “CPU Time” tell me?

What does "CPU Time" tell me about the process? Is it the accumulated time the process has run? It sometimes jumps a few seconds and often nothing happens.
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2answers
1k views

MacBook Core 2 Duo CPU goes to 85-90 degrees Celsius

I was encoding some videos today on my MacBook and noticed the temperature goes to around 90 degrees with the fan spinning full speed. Should I be worried? Is this normal? I was going to leave my ...
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3answers
4k views

Why does my iTunes use so much CPU time?

I have a roughly 2 year old Macbook (10.5). I have iTunes 10. When iTunes is playing MP3s, I see CPU usage of the iTunes process in the system monitor ranging from 65%-75%. When I pause the music, I ...
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0answers
685 views

vmstat shows incorrect processor idle time

To begin with OS: IBM AIX #oslevel 5.3.0.0 lparstat #lparstat System configuration: type=Shared mode=Uncapped smt=On lcpu=12 mem=12288 psize=16 ent=3.00 %user %sys %wait %idle physc %entc ...
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2answers
568 views

Why is Kaspersky's CPU activity not shown in process list?

So, when Kaspersky Internet Security 2011 (11) starts doing a full scan, I can see my CPU activity going to 100%. However, the KIS process only takes 02% according to Task manager, how is this ...
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2answers
20k views

TrustedInstaller.exe is eating all CPU; 100%

I have bought an ASUS ux50v for my wife (so pleeeeeaaaase help!), it has a single core cpu and Windows 7 Home Premium installed. I have updated it's os (made a mistake?) and now this ...
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2answers
995 views

System process consuming CPU in Vista; mostly in ntkrnlpa:KiDispatchInterrupt

I've been having some trouble with high CPU usage from my system process intermittently for quite a while (months). More recently, it is present all the time that Windows is running. Running with ...
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2answers
433 views

Using Server CPU for Desktop Applications

Though it's a n00bish question I haven't found any clear answer anywhere even after long days of googling. Recently I am planning to use an AMD Opteron Quad Core 2350 for my home lab. I'll not run it ...
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1answer
1k views

Top is showing % CPU > 100?

top is showing several processes with CPU % greater than 100%. What does this indicate?
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1answer
801 views

Log CPU usage to file for specific process over time

I am looking to log CPU usage to a file over time on an RHEL system, and have seen this, but it doesn't seem to produce the right results - it seems like an anomaly between how ps and top calculate ...
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votes
3answers
750 views

wmpnetwork.exe service clogs CPU usage

We have remote locations each with 2 ASUS media extenders that stream from a computer with a shared Media Player library. Lately, several of these locations experience the "wmpnetwork.exe" service ...
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1answer
983 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 ...
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1answer
599 views

Laptop suddenly lags making computer unusable

Yesterday, after playing Team Fortress 2 for around 20 minutes, my computer (an HP Compaq 8510p laptop) started lagging so bad I couldn't even shut down the game, I couldn't move the cursor nor could ...
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votes
4answers
15k 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.
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0answers
3k views

DpHostW.`.exe` process doesn't respond and use 25% CPU?

Sometimes when my Dell Vostro 3300 have been in sleep mode and then wake up, the fingerprint reader doesn't work. I also notice the cooling fan runs high and the process "DpHostW.exe" that is used for ...
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2answers
466 views

How much history does CPU Usage History in XP's task manager show?

Could anyone tell me how much history, in time (e.g. seconds or minutes), the CPU Usage History panel in the Task Manager show (see the image below)? I'm particularly interested on the XP, but also ...
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5answers
7k views

CPU usage at 100% for several hours

If I use a processor at 100% constantly for several hours, can that damage the machine?
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1answer
785 views

What is cisvc.exe and why is it consuming so much CPU time?

I see that cisvc.exe is taking up about 50% of my CPU time. It has consumed 14 hours of CPU time out of 30 since the last restart. What is this process? How can I see why it is consuming so much ...
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2answers
3k views

High CPU usage on Snow Leopard

I'm having high CPU usage by a process called "DataDetectorsAgent" Which seems to start randomly even when I close it using Activity monitor. my questions are: What does this process do? how can I ...
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1answer
5k views

How to reduce the Skype video settings to work with an older computer

When making a Skype video call with a Logitech C600 webcam the video received on the other end often freezes. The local computer is has a single core AMD processor. The video being received from the ...
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3answers
18k 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 ...
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3answers
119 views

Resources of minimized programs in Linux

When a program is minimized to the taskbar in Linux does it use less resources?
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2answers
1k views

netbeans: takes 100% cpu when working with a big java project

Is there a way to debug what exactly causes netbeans to be so slow and to take so much resources? When I try to use code completion it takes around 20 to 30 seconds for the code completion to appear. ...
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votes
4answers
2k views

Multicore CPU energy requirement and load balancing

I am interested in load balancing for multicore CPU systems. If you use 1 CPU with multiple cores, is it more energy efficient to balance the load on several cores, or try to fill up single cores and ...
3
votes
3answers
3k views

What does it really mean when CPU usage is 0% in the Windows Task Manager?

I don't know if there's any instruction that could make the CPU idle. And I also notice that there's a System Idle Process that use 99% of the CPU when the CPU usage is shown to be 0%. What is this ...
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3answers
2k views

Linux program to artificially create CPU usage

Since I own one of those Centrino based Core 2 notebooks that create annoying buzzing noises when idle (= entering C3 or C4 power saving states), I'm looking for a program that creates artificial CPU ...
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4answers
4k views

svchost.exe taking 25% cpu

For some time now I have been noticing that one of my svchost.exe was constantly taking 25% cpu time on my 4 core, Win7 Ultimate PC. This particular service host is hosting: Cryptographic Services ...
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1answer
1k views

Why does youtube.com use 100% CPU?

I am running Firefox 3.6.6 on Windows XP SP2 on a Dual Core. Why does my CPU usage increase up to 100% for one core when I watch movies on youtube.com?
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2answers
615 views

100% CPU Runaway Processes (NCurses?)

This is a problem I've had for years, but just haven't posted anywhere about it until now. I'm running GRML, a Debian squeeze based Linux distro, and occasionally certain processes will runaway and ...
3
votes
1answer
329 views

Assigning CPU cores to virtual machines

VMPlayer lets you select how many CPU cores to assign to the virtual machine. I changed it from one to two. Does that mean that those two cores will be used exclusively by the VM?
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votes
4answers
7k 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
2answers
1k views

Where is my CPU usage going?

My Ubuntu 10.04 Lucid virtual machine is saying it's at 100% CPU usage... but all I'm running is Thunderbird. According to top, CPU usage should be ~25.9%... How do I interpret this conflicting output ...
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votes
2answers
1k views

Alternative to Rhythmbox that's light on CPU

I'm running Ubuntu Lucid on my netbook, and I like listening to music while doing other stuff. Problem is: Rhythmbox is constantly consuming 7-9% of my CPU while it's playing. Now, 9% might not seem ...
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3answers
267 views

How much processing power is required while downloading data from a high speed internet connection (say 3 Mbps)?

I was just wondering about the CPU usage while downloading data (say, for example, a movie) from the internet. Can anyone tell me, how much is a processor really in use while downloading and, in the ...
0
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5answers
68 views

Reason behind system power usage?

when the number of applications running in a pc increases, the power consumed by the PC is also increasing. Is this correct? I think the reason behind this is CPU. Please let me know what role the ...
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votes
5answers
12k views

ngen.exe is constantly using CPU

I recently installed Windows 7. This was a clean install (i.e. not an upgrade from another version of Windows), but I did install a bunch of other programs. All mainstream applications - nothing ...
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votes
3answers
15k views

How can I monitor the CPU usage of one process over a period of time?

I want to know what the average CPU usage is of a particular executable on my PC over a day. I could write a C# app to do this, but I figured this is exactly the sort of app Superuser would know ...
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0answers
1k views

IP Helper service uses 50-60% CPU every 1 minute for 3-4 seconds on Windows 7

I have checked everything - all the processes in the process explorer. IP Helper service is causing CPU usage of over 50 % every 1 minute for 3-4 seconds then comes back to normal. In the task ...
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4answers
3k 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 ...
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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 ...
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1answer
2k views

Understanding top output in Linux

I'm trying to determine the CPU usage of a program by looking at the output from Top in Linux. I understand that %us means userspace and %sy means system/kernel etc. But say I see 100%us. Does this ...
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3answers
2k views

How can a single threaded application like Excel 2003 take more than 50% of a hyper-threaded or dual-core CPU in task manager?

I'm waiting for Excel to finish a recalculation and I notice that the CPU usage as reported by Task Manager occasionally spikes to 51% or 52% on a Pentium 4 with hyper-threading. How is a ...
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4answers
782 views

CPU fan making noise

CPU fan is making noise. I figured out some reasons: Cable coming out of fan is vibrating. And maybe also CPU fan is loose causing vibration. Suggest options. I cleaned the fan. But found that ...