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

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How to find process that's using 100% of CPU

As i'm looking at htop and top i see that my processor usage is 100% allways. But i can not see any process that is using that much CPU. Htop shows me only 1-2 processes that use around 5% cpu time. ...
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2answers
4k views

Intel Core i5-2467m - Turbo Boost not activating?

I have a Samsung Series 5 laptop with an Intel Core i5-2467m process @ 1.6Ghz. The processor supports Intel Turbo Boost up to 2.30 Ghz according to the specifications. The i5-2467m is a dual-core ...
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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 ...
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1answer
583 views

Performance and Battery Life

Okay, I'm looking for hard evidence to settle an argument. From a developers perspective, the argument of CPU usage and battery life comes into play often. If a CPU is throttled to use 10% of its ...
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1answer
1k views

High CPU usage by virtualbox running windows 2003 in Linux host

I'm running a windows 2003 guest in Linux xiamx-pc 3.2.0-24-generic #39-Ubuntu SMP Mon May 21 16:52:17 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux I notice that virtualbox process constantly takes around ...
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0answers
343 views

100 % CPU usage by HP Probook 4520s

I have a HP Probook 4520s with Windows 7 Ultimate, i5 Processor and 2 GB RAM. For the last couple of days, when I turn on my laptop, the CPU usage rises up to 100% and remains there for 10-15 ...
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1answer
708 views

Gimp 2.8 (cpu not used to full capacity)

Since I updated Gimp to 2.8 (and let me start by saying how happy I am with the new gimp) I have notice that Gimp only uses 35% max of my CPU power. I have tried changing settings, assigning only one ...
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3answers
3k views

audiodg.exe is hogging my CPU

Every time I play audio on my computer, it starts lagging badly. After checking with the processes, audiodg.exe is being a greedy b** and hogging my CPU. I've tried ending the process (with regret) ...
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2answers
3k views

Throttle CPU Usage consumed by Process

We run a game-server company where we basically have large amounts of customers sharing a single machine, and are just on their own instance of a Java Process (Minecraft) managed by our Web Control ...
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3answers
4k views

How is CPU temperature related to CPU frequency and CPU usage percentage? [closed]

While reading Dennis's reply, it makes me think about what determine the CPU temperature. Following is my understanding. The CPU temperature is solely determined by the CPU usage in a unit time. The ...
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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 ...
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1answer
171 views

Can't diagnose why all of a sudden my computer is incredibly slow even though the cpu%, or mem usage doesn't change

I have had 3 operating systems(Ubuntu, Win7, Win8) on my computer and I have reformatted the drive for every new install. Sometimes all of a sudden my computer is really slow(I can barely minimize a ...
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1answer
10k 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 ...
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0answers
1k views

Windows 8 Consumer Preview - Full Core CPU Utilization by system process [closed]

I have a Lenovo X220 laptop on which I've installed Windows 8 Consumer Preview. Sometimes though it'll get stuck using 100% of a CPU core though in the SYSTEM process, and there's nothing I can do to ...
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1answer
98 views

Computer Lockup

I have a small computer that I am running a video application on (video conferencing-style). At inconsistent times, it will 'lock up' - video will freeze, if I am telneting into it from another ...
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1answer
135 views

How can I be alerted when a process goes idle (that is, its CPU usage reaches zero for a sustained period on Windows 7?

How can I be alerted when a process goes idle (that is, its CPU usage reaches zero for a sustained period on Windows 7? Essentially, I have a long running batch process that is pegging one of the ...
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0answers
516 views

Virtualized guest vs host CPU usage

I am using qemu with kvm as my hypervisor. I am running a gentoo guest on an ubuntu host. The guest is being given a single processor. When I run a compute intensive job (say empty-loop) I get almost ...
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1answer
461 views

MayaBench (rendering) only using 25% CPU; Other software uses 100%

So here's my frustration. I have a Intel 2600K 3.4Ghz OC @ 4.8Ghz ASRock Z68 Extreme 4 Mobo 16GB 1600mhz DDR3 memory. When i run MayaBench for rendering, I get this wierd bumpy shit. while ...
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3answers
485 views

How can I ensure that exactly one process is running on a given processor/core?

I would like to do this so I can accurately speed test my processes, and just to be able to have the illusion of control. Maybe I want to reserve one processor for special programs. Maybe I want to ...
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2answers
5k views

Firefox 12 CPU at 99% and making Macbook Pro hot

I am running Firefox 12 on a Macbook Pro, and it keeps going up to 99% CPU usage, I can hear my computer revving up and feel it getting hot. The previous version did this as well. I don't have any ...
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2answers
5k views

linux migration/N high cpu consumption

on my linux appliance based on 3.0.0-14 kernel I got: RPN:/tmp# ps axuf | grep migration root 6 92.9 0.0 0 0 ? S Apr23 2788:33 \_ [migration/0] root 7 99.7 0.0 ...
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2answers
792 views

What is causing sudden freezing during running real-time program?

So I run a high intensive (CPU/GPU) real-time program. During normal execution suddenly everything freezes for 1-4 seconds. I opened "Process Explorer" in the background to help gain insight and maybe ...
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1answer
711 views

CPU Usage 100% With No Explanation

I just recently switched my AV from Avast (subscription was up) and installed the Norton 2012 package provided for free from my ISP (Comcast) about two months ago. I use my HP G62, dual core, 2.1 GHz, ...
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1answer
3k views

CPU Usage at 100% with “Hardware Interrupts”

After turning on my desktop one day, I found that my CPU usage was maxed out at 100%, with most of that going to hardware "Interrupts": I tried to enable/disable all my devices one by one through the ...
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1answer
788 views

Ubuntu not balancing cpu usage among cores, making load go up

I am running 10 processes that each use 20-70% of a core of an i7-920 with 8 cores on Ubuntu 11.04. CPU scaling is turned off. When I look at htop, I see that cores 4 and 8 are almost unused, while ...
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2answers
2k views

linux ' top ' get total of a user's cpu usage > 100%, with IRIX mode off

I used ' top -bn 1 -u myaccount' to monitor the summary of all the cpu usage of my account. But sometimes my log shows that the summary adds up to 160% plus. I'm quite confused, does anybody know ...
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2answers
837 views

What tools exist for monitoring the CPU and memory utilization of Firefox?

Firefox appears to using too much memory and cpu even when it is idle What tools exist for monitoring the CPU and memory utilization of Firefox? I am thinking of an equivalent of Sysinternals ...
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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 ...
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1answer
693 views

apache: cpu usage per virtual host

Is there any tool that can provide statistics about cpu-usage per virtual host? This way I can understand which is the website that causes 100% spikes in CPU usage. Thanks! if this is not possible, ...
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12answers
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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 ...
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1answer
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My cpu usage increased to 100% and my computer works slowly after dis assembly

Yesterday, I opened the case of my computer and cleaned the cards and other devices. When I re-assembled the computer and powered it on, Windows 7 works very slowly and the CPU usage in the task ...
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1answer
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Proccess System.exe cosumes a lot of CPU in Windows Server 2008-r2 [duplicate]

Possible Duplicate: High CPU usage by the “system” process I have a PC with Windows Server2008-r2 and in the proccess list the proccess System.exe consumes a lot of CPU constantly. Can you ...
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3answers
887 views

How To Determine Which Tab In Internet Explorer Causes High CPU Usage?

I have high CPU usage in one of a few iexplore.exe *32 processes that i see in Windows Task Manager. Is there a way to identify which tab causing CPU spikes just like it is possible in Chrome? ...
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2answers
1k views

Limit CPU usage / Cores on AIX process?

We have two processes running on an AIX machine, one is Oracle the other is Business Objects. BO takes nearly 100% CPU cycles when running and Oracle is unable to process at an acceptable speed ...
5
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1answer
998 views

Heavy CPU Usage for Interrupt

As a follow-up to the question Why can't my computer speed up again after closing large applications? … I used Process Explorer to check my PC. I found that there's an average 30-40% of CPU ...
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2answers
157 views

Distributed computing project? [closed]

I've tried seti@home and folding. But are there any other good ones that might have better luck actually making a difference? I don't want to contribute to a project that is going to use the results ...
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1answer
4k views

Program that logs the CPU usage in Windows 7 [duplicate]

Is there any program that logs the CPU usage of all programs? I want to know, over a period of one month, which programs use the CPU more intensely.
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3answers
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Strange cpuinfo, how many cores does these physical cpu has?

At the end of this post is my /proc/cpuinfo. I know the Physical cpu number is 2 grep 'physical id' /proc/cpuinfo|sort|uniq|wc -l 2 But how many cores does each cpu have? The 'cpu cores' shows ...
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0answers
706 views

Is Windows 7 throttling my CPU?

I am hoping someone with more experience in Windows 7 can help me out. I have written a php script that utilizes curl_multi to do some spidering. This script runs on an install of WAMP. I originally ...
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1answer
2k views

How is load average calculated on osx? It seems too high - and how do I analyze it?

An advanced question: I think my load averages are too high as compared to a linux system. I have around 0.40 1min with basically no cpu use (0-1%) and even if this is spread out over 4 cores it still ...
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1answer
308 views

identify which chrome tab is using up CPU in Linux?

In my Linux laptop, I sometimes have a bunch of tabs opened in Google Chrome, which I believe creates a new process per tab. I would like to be able to pinpoint the tab that is using up the CPU. Is ...
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2answers
623 views

My CPU doesn't seem to be worked beyond 20%

I have a i3 based system running Windows 7. I have noticed that even during intense activities like copying GBs of data the CPU doesn't exceed 25%. I have no malware. Some questions based on that ...
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1answer
1k views

ffmpeg not using full CPU power

I have a Dell Precision 490 workstation, running Ubuntu 11.10, with two dual core Xeon 5160 CPUs (so 2 physical CPUs, with 2 cores each), which I am using to encode TV recordings (MPEG2) to H264 using ...
0
votes
1answer
13k views

Why is wpffontcache_v0400.exe hogging the CPU?

In the last few days I've noticed really poor performance on a virtual machine I'm using at work. It's running Windows Server 2003 SP 2. When I check Task Manager, the process wpffontcache_v0400.exe ...
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1answer
1k views

How can I reduce high CPU usage from DPC's with USB Serial Ports

I have an app that communicates with up to 50 devices over serial ports. The communication takes place in threads, and the threads are throttled so that only a certain number are active at once. ...
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1answer
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Synergy stopped working after a week on Windows7, high CPU usage and no connection

Used synergy 1.3.1 & 1.3.4 since 2007 without a hitch. Upgraded to Windows 7, and synergy suddenly stopped connecting after a week. Now any version I try (1.3.1, 1.3.4, 1.3.8, 1.4.5) goes into ...
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1answer
598 views

Msmpeng.exe is Making Me Tear My Hair Off!

msmpeng.exe causes CPU spikes that happen every 15 mins or so, and it has finally got to me. As far as I can remember, I started facing this after installing MS Security Essentials on my Windows 7 ...
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1answer
191 views

“svhost(netsvc)” is using about 40-80% CPU when the system starts

My CPU usage is constantly at 40% (maximum 95%) most of the time when I start my PC. It continues to work at this rate for about 15-25 minutes. I checked the performance monitor and found out that ...
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2answers
4k views

taskhost.exe uses a lot of CPU and does not quit

The executable taskhost.exe is running twice and one process takes more than 50% of CPU. It increases the fan noise and slows the computer down. When i end the process with task manager the computer ...
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2answers
174 views

Why the startup of a new application causes system stuttering

All modern operating system are supports multitasking. So, each running app would get a certain amount of time slice from cpu for their operation(depending on their demand). The questions is, if the ...