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

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VBA CPU usage during debug

Is there a reason why CPU usage will jump when debugging in Word VBA? I noticed that even when I "step into" a project, and nothing is actually being calculated except waiting for me to step to the ...
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1k views

Constant CPU usage from services.exe, restarting a particular service fixes it, why?

I've always noticed steady usage of my CPU from 'services.exe', typically from 1-4%, constantly throughout the day. If I enable the CPU Time column and sort the processes, I can see that over time ...
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729 views

Why USB 3.0 ports are causing high CPU usage?

After two weeks of research and a lot of thinking, it looks like my problem (Explorer is very slow after connecting external HDD) is caused by USB 3.0 ports. In short: after working around one hour ...
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2answers
2k views

High CPU load from System when idle

I run Windows 8 Pro 64bit on a ~3 year old Sony Vaio. Pretty much since I installed Windows 8 I get high CPU load when I leave the system alone for a couple of minutes. The high load will continue ...
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1k views

windows CPU is at 100%, why is my CPU frequency down?

I'm looking at Resmon on Windows 8 Basic. I have chosed the "high performance" power plan, which I thought would keep my CPU at the highest levels possible. When the machine is (mostly) idle, the ...
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1answer
628 views

Allocating more CPU usage to MATLAB

I was wondering if there was a way to allocate more CPU usage to MATLAB. Currently, it says that 85% of my CPU is is idle. Is there some way to increase the threads MATLAB uses, or something along ...
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1answer
365 views

Get cpu temps from terminal using Cygwin?

I am using Cygwin 64 on Windows 8 and would like to use the bash interface to get cpu temperatures (4 cores, as well as gpu temps). Is this possible? I am using the temperature monitor application and ...
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3answers
1k views

Hard drive dying? One CPU core runs at 50% but System Idle Process at 99%

I think I have a hard drive or video card dying in my HTPC. It's a dual core CPU and one processor is almost always at 100% usage, but processes are all nil, System Idle Process is at 99% It's a ...
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1answer
168 views

Can I run a Pentium 4 on 100% for an extended amount of time?

I want to use my Pentium 4 desktop for running some heavy simulations. These simulations take from two to eight hours. Is it safe to run the CPU at 100% for such a long time?
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163 views

Sudden drop in CPU - unclear root cause

Trying to diagnose why my computer suddenly comes to a CPU standstill (somehow related to plugging in the computer to power packs / recharging). One thing that has prevented me from diagnosing the ...
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3answers
174 views

CPU usage and its utilization [closed]

When we use _task_manager_ in windows or top in Linux, we could see that the cpu usage is usually not very high. Moreover, developers are also doing their best to let this target come down. Actually, ...
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1answer
151 views

How to read 'top' results

I am running a software and while it is running, I want to know how much CPU usage or RAM it occupies... along with maybe other things that could be interesting. For that purpose, I need to know ...
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6k 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 ...
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1answer
366 views

Monitoring CPU usage of Virtualbox with top

I'm using the top command in Linux to keep a close eye on Virtualbox which is running a VM. The current CPU in the server is a Quad Core Xeon processor 3.3 Ghz and I have only assigned one core to ...
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1answer
264 views

How to disable CPU from entering IDLE States

This thread may be similar to Any way to disable specific CPU idle (Cx) states? I have USB 2.0 CMOS sensor camera that needs to be controlled VIA labview. However , when it captures images ...
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1answer
107 views

Can someone explain what causes extra heat in a CPU

I have a hardware question about CPU and chips in general: what is causing the extra heat when CPUs are busy doing computations ? I thought that the CPUs would have a way to throttle themselves when ...
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1answer
1k views

cpu load measure with hyperthreading on linux

How can I get the true usage of a multicore hyperthreading enabled cpu? For example lets consider a 2 core CPU, expressing 4 virtual cores. A single threaded workload would now show up as 100% in ...
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1answer
195 views

Why does my CPU go to 800% on a quad core processor?

I have a recent Macbook Pro. My processor is a: 2.4 GHz (i7-3630QM) quad-core Intel Core i7 Ivy Bridge with 6 MB on-chip L3 cache I am running some cpu intensive programs, that each use "100%" of the ...
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3answers
3k 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 ...
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196 views

Linux Load Average with CPU 1x2GHz

My load average shows 2.0 in 5 and 15 mins. My CPU is 1x2GHz, I know that 1.0 = 100% but what about GHz? Does it affect that?
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372 views

Pulseaudio high CPU usage

Is it normal that the pulseaudio process has sometimes a CPU usage of ~40%, even without playing audio? The process seems to run in realtime-priority, is that the cause of the problem? Update: I ...
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1answer
133 views

redirect awk information to stdout

I am trying to gather information for CPU use for all the processors in a text file. mpstat -P ALL -u 1 | awk '{print $4}' > cpu.txt && mptat -P ALL -u 1 | awk '{print $4}' | tee cpu.txt ...
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2answers
2k 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 ...
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54 views

Is High CPU Usage Dangerous For My Computer?

When I play Publishing Clearing House Slots, eventually Norton advises me that my CPU usage is running high. I know nothing about computer temperatures; am I at risk for damaging my computer?
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1answer
336 views

How to identify what is causing sys% in top?

top on one of hex cores with hyper threading shows the following Cpu0 : 2.3%us, 58.8%sy, 0.0%ni, 38.2%id, 0.7%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 4.7%us, 62.1%sy, 0.0%ni, 31.2%id, 0.7%wa, ...
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5answers
620 views

Negative impacts of using high CPU And memory for a few seconds?

I built a crawler for my own personal use that queries many pages with curl_multi_exec. It uses 98% CPU and memory for 10 seconds on my laptop. I'm only crawling around a 1000 pages, but I wanted to ...
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3answers
561 views

How do I find out I have a high cpu activity on my macbook air, before my battery is used up?

I have a Macbook Air. Occasionally the battery runs down very quickly and it's caused by a high cpu process. My problem is I don't know this is happening - there's no loud fan noise, just a quicker ...
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0answers
253 views

Why is AppleIntelCPUPowerManagement devouring my CPU?

Once in a while, for not apparent reason my Macbook Pro (OS X 10.7.5, late 2011 model) will ramp up to 65%+ CPU usage by "System", and stay there for upwards of an hour. If left long enough, the ...
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2answers
3k 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 ...
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2answers
3k 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 ...
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301 views

CPU hitting 100% when flash or game is running after dropping laptop

I have a quad core Lenovo with 8GB memory running windows 7 x64 with NVidia quadro 880 Everything was working great until one day I would be playing a game and the CPU would max out for a few ...
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AcroRd32.exe Maxes Out Core

My CPU usage hit 100%. Process Explorer shows two instances of AcroRd32.exe. Each one is maxing out 1 core. But, there is no Adobe/Acrobat Reader window showing. I had closed the windows earlier. ...
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1answer
371 views

Will a CPU upgrade speed up my web browsing? How to tell?

My CPU model is 2 and a half years old now, released Intel Q4'2010. How can I determine if getting a new CPU will improve how fast I surf the Internet, versus getting a better ISP subscription?
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1answer
677 views

CPU usage doesn't add up

My computer has been acting a little wonky today (it's been running a little slow), so I decided to open up the task manager to look at CPU usage. Why does the top CPU usage not add up to the total ...
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2answers
109 views

CPU usage and speed of program

This is for my server. The scenario goes as follows: Computer A has a faster processor than computer B. They both execute the same program, but Computer A's CPU usage only goes up to 30% while ...
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1answer
9k views

How does windows “limit” the CPU (Power Options / Battery saving)

Can anyone explain how Windows effectively limits the CPU? Last time I tried some tricks to let my laptop not overheat, so I tried limiting the CPU to 70%. As for my suprise it stopped my laptop ...
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1answer
608 views

Task/Services has high CPU, but how to find out what it is doing?

nearly daily some service is starting a task and never finishs. This task uses an entiry cpu core, which results in high fan activity. Using ProcessExplorer I found out that it might be a service ...
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196 views

CPU usage according to lxde applet and task manager is different than top

The CPU usage in top (htop) appears normal but the task manager and lxde CPU applet don't. Here is a screenshot: This is Lubuntu 12.04 Is this a bug?
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166 views

Decompiled DSDT table, looking for fan values, can't locate. table inside

I have the suspicion that my laptop doesn't set it's fan speed to 100% even when the CPU is hot. This is because I can barely hear the fan when the CPU is > 95 degrees or so. So i'm trying to check ...
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1answer
130 views

Max CPU on everything

I just reinstalled windows 7 ultimate 32 bit on my desktop PC, and it seems like every program I try to run maxes one of my CPUs! its ridiculous! Every time I load a web page in any browser it maxes a ...
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1answer
2k views

Opera - How to make it run faster?

I'm using Opera version 12.13 under Windows XP home. It needs ~50% of my CPU and it takes a few seconds if open or close a tab. How can I make it run faster and if possible with less CPU usage? I ...
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2answers
255 views

JSON formatted text file makes CPU jump to 100%

I'm editing a JSON formatted text file in Mac OS X Mountain Lion (10.8.2) on a 2.3 GHz Intel Core i7 with 8 GB of RAM. The file is approx. 3 MB large so it's not very big. Anyhow this is making both ...
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584 views

How can I use sar to track processor and memory usage?

I'm running some load tests on a application hosted on one of my server and I wanted to track the processor and memory usage over a period of time e.g. 30 minutes. I've read that I can do this with ...
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3answers
9k views

HD 1080p .mkv videos don't play smooth. Is it a CPU, GPU, player or OS issue?

I have some .mkv 1080p videos but VLC can't play them smoothly. If I open the Task Manager, I can see that CPU is at 100%, because VLC uses as much as it can (95% or more). Then, I wonder Is it a ...
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1answer
3k views

Windows 8 not using max CPU speed on heavy operations

On my Windows 8 laptop, whenever I'm doing video transcoding with Handbrake, it seems to limit the CPU usage to 44% and the CPU frequency to 42% or 43% of max allowed. That probably means the CPU ...
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4k 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, ...
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rundll32.exe : infected examples pushing cpu to %100 . Malware bytes couldnt detect it niether could Win Def how do i fix it [duplicate]

My laptop is almost useless. The rundll32 application is infected with malware. I have tried several malitious software removal tools all for nought.
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1answer
2k views

Asterisk Has Consistent 100% CPU Load On One Core

http://i.imgur.com/sySQfsH.png Please note the screenshot. I have an Ubuntu 12.10 box running Asterisk. I ssh'ed into the server the other day to find asterisk running at 100% CPU on one core, and i ...
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186 views

Ping vs CPU usage

I’m working on some measurements and the ping results are intriguing me. I tested it in several scenarios and the results are the same: the ping results are better when the CPU load is higher. The ...
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1answer
186 views

'top' output baffles me

top - 18:22:21 up 98 days, 23:26, 4 users, load average: 2.73, 2.85, 2.60 Tasks: 210 total, 1 running, 209 sleeping, 0 stopped, 0 zombie Cpu(s): 3.6%us, 2.5%sy, 0.0%ni, 87.7%id, 5.1%wa, ...