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

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7
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5answers
12k 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, ...
2
votes
3answers
224 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% ...
1
vote
1answer
811 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 ...
0
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 ...
3
votes
1answer
2k 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.
1
vote
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?
5
votes
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 ...
3
votes
2answers
1k 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 & ...
0
votes
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 ...
1
vote
3answers
9k 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
854 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
405 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) ...
1
vote
2answers
186 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
20k 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
votes
0answers
299 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 ...
0
votes
3answers
819 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
396 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
894 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 ?
1
vote
1answer
211 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
vote
1answer
163 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 ...
55
votes
6answers
29k 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
5answers
897 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
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 ...
0
votes
2answers
234 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 ...
1
vote
1answer
795 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 ...
3
votes
2answers
5k 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.
1
vote
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 ...
10
votes
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 ...
1
vote
0answers
703 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 ...
4
votes
2answers
587 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 ...
4
votes
2answers
25k 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 ...
1
vote
2answers
1k 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 ...
0
votes
2answers
436 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 ...
1
vote
1answer
1k views

Top is showing % CPU > 100?

top is showing several processes with CPU % greater than 100%. What does this indicate?
1
vote
1answer
807 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 ...
0
votes
3answers
776 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 ...
0
votes
1answer
1k 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 ...
1
vote
1answer
694 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 ...
10
votes
4answers
20k 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.
1
vote
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 ...
1
vote
2answers
471 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 ...
9
votes
5answers
9k views

CPU usage at 100% for several hours

If I use a processor at 100% constantly for several hours, can that damage the machine?
1
vote
1answer
815 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 ...
3
votes
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 ...
0
votes
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 ...
24
votes
3answers
23k 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 ...
1
vote
3answers
119 views

Resources of minimized programs in Linux

When a program is minimized to the taskbar in Linux does it use less resources?