Tagged Questions

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

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1
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1answer
786 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
701 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
926 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
524 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 ...
8
votes
4answers
13k 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 ...
1
vote
2answers
455 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
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5answers
6k 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
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1answer
752 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 ...
17
votes
3answers
15k 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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votes
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. ...
9
votes
4answers
1k 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 ...
2
votes
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 ...
2
votes
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 ...
1
vote
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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votes
2answers
596 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?
3
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 ...
2
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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vote
3answers
262 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
votes
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 ...
6
votes
5answers
11k 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
14k 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 ...
1
vote
0answers
967 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 ...
8
votes
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 ...
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
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 ...
3
votes
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 ...
0
votes
4answers
748 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 ...
1
vote
0answers
360 views

Do cpuidle governors and cpufreq governors work in mutual exclusion?

My understanding is that when a CPU is in the C0 state, the cpufreq governor decides what P-state the CPU should reside in. When a CPU goes idle, it falls from the C0 state to a deeper C-state. The ...
3
votes
2answers
2k views

How to cope with runaway Flash plugin in Google Chrome browser?

I'm using Google Chrome for Linux, version 5.0.307.11 (Official Build 39572) beta with the Linux Flash plugin version 10.0 r32. Quite often, the Flash plugin goes wild and pegs the CPU with about ...
1
vote
2answers
129 views

CPU on ubuntu goes crazy

I am running ubuntu 9.10. At the sudden the CPU goes crazy and when I do top, it is used by a command called 'dd' and it is run by USER 'root'. It keeps going to for > 15 minutes. Can you please ...
0
votes
1answer
383 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
4answers
702 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 ...
5
votes
4answers
19k views

SvcHost is taking 100% of CPU. It appears to be either DcomLaunch or TermService - virus?

So my SvcHost is all of a sudden taking 100% of my CPU, and I'd like to figure out which service is responsible for this. Is there any way to differentiate the load being generated by the multiple ...
0
votes
1answer
2k views

How to set alert when cpu usage reaches 100% Windows XP [closed]

Is there a way to set an alert, email or sms, when a certain windows xp machine's cpu reaches 100%?
15
votes
2answers
23k 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 ...
7
votes
4answers
11k views

spoolsv.exe consumes all CPU and RAM resources

Consider a Windows 7 x64 installation with 2 printers installed. The system has 8GB installed RAM. One printer is a Brother laser MFC-8220 Printer via TCP/IP, and the other is a CutePDF printer. ...
5
votes
4answers
4k 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
5answers
2k views

Excel performance improvement

I have an 8 CPU 3GHz Windows machine that is estimated to finish a calculation using Excel in 16 days based on a sample data test. This performance is not acceptable(!). The calculation does not use ...
8
votes
10answers
96k 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 ...
9
votes
6answers
7k views

Finder Using Nearly 100% CPU

I'm having a problem where the Finder uses WAY too much CPU time. It's using up to 100% of one of my cores. I'm running 10.6.2 on a MacBook Pro w/ 6GB of RAM, plenty of fast (SSD) disk space. I also ...
1
vote
1answer
438 views

Why is “% System” in Activity Monitor is so high (OS X)

Something I've done recently has messed up my cpu usage in OS X (Snow Leopard). Looking at Activity Monitor, I see normal programs and normal cpu usage (15-20%) for all user processes. But the "% ...
5
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 ...
4
votes
3answers
2k views

Mysterious cpu usage

A few times a day my CPU will jump to 99% usage, and it will stay there until I force a shutdown (via unplugging it). Below is a snap of the task manager during this time. I am certain a virus is not ...