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

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4
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554 views

Dropbox causes xorg to use 100% CPU

For some time, I noticed that my xorg process uses up between 60 and 100% of the CPU (according to top). I also noticed that interactive work becomes sluggish, even on my multi-core i7 processor. ...
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155 views

High CPU usage when using AMD GPU instead of Intel HD Graphics

I have a strange problem with my CPU (Core i5-4690k), when I'm using my AMD GPU (HD-7870 XFX). Even in games with pretty low system requirements (Counterstrike Global Offensive on the lowest possible ...
2
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0answers
134 views

Process tree CPU history usage, process tree memory usage (aggregated) on Windows 8.1

This question is general for Windows OS, but I would like to see a software for Windows 8.1, since this is what I use. I'm looking for software, that will take a process tree (e.g. Chrome.exe ...
2
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0answers
141 views

Idle CPU and CPU Power-saving mode definitions

I have a presentation on CPU's and there's some stuff I want to clarify that's defined in many research papers that I'm not fully sure about. How can the CPU ever be idle? I mean as long as you are ...
2
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0answers
454 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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0answers
209 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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181 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 ...
2
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240 views

Why does cpu usage never reach 100%?

I have a dual-core processor. I'm running two instances of the program below: void main(){ int i; while(1){ i=i+1; } } I run TOP and CPU usage gets up to 97%, however it never ...
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217 views

Macbook Pro very slow despite normal memory and CPU usage

My MBP (OS X Mavericks) with 4G RAM has been slow ever since I bought it last year, but now it's getting ridiculous with the loading symbol showing up each time I open a new tab in Chrome or even ...
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22 views

Virtual Domain Cpu Time limit

I'm running Munin on Ubuntu 14.04 to monitor my virtual machines (running KVM, libvirt). I often get a notification that CPU usage on my base system is 'critical': mydomain :: Virtual Domain Cpu Time ...
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32 views

How to log screen power off/lock

I want to log screen power off/lock events. A substitute would be to log mouse/keyboard idling (from which display powering off can be inferred. I ask because I frequently find the fan going full ...
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152 views

Netbeans 8.0 300% cpu usage mac osx

This happens after a while of using netbeans with php web development. Anyone know if this is a common problem or not and if there is a fix. Don't want it to slowly kill the macbook air I just ...
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124 views

Vagrant vbox 45-50% CPU usage

I am running a headless Ubuntu server box on my Windows 7 64 bit PC with Vagrant. My PC has 8 GB ram and Intel Dual Core 3.16Ghz E8500 processor and PAE. The problem is that VBox routinely uses btw ...
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0answers
37 views

minimum allowable CPU speed

How can I determine the minimum allowable speed for my CPU to run the computer. Having the option to reduce the CPU to 0 is not logic nor allowable in Win8. Even if you set the Max. processor ...
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0answers
102 views

30% CPU usage when charger unplugged. When plugged in, cpu usage drops to 2%

I have checked by external debugger and it seems that batteryservice:update start runs 10 times per second. Other battery processes are running very often too, only with charger unplugged. It's brand ...
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137 views

Why Skype consumes huge percentage of CPU?

I have searched this a lot using Google. I have found numerous people having the same problem as me, but I could not find any good answer anywhere. That's the reason I am asking it here as well. ...
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0answers
114 views

Windows unresponsive, CPU utilization uninformative

In many situations my Windows 7 box becomes unresponsive, but the Task Manager shows 0 CPU utilization for all processes. Obviously it is the kernel/Windows itself that is sucking all the cycles and ...
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266 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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606 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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96 views

Backup on Debian interfering with other running programs

I've got a webserver on Debian 6. The system is also always running some processes sensitive to CPU usage. When I am using some of tools like rsync or tar, they are using CPU too much and my sensitive ...
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413 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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601 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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750 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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264 views

Linux: X11 is using up 50% of one of my CPUs and lagging terribly

I have been running my Ubuntu Linux Machine recently on powerful hardware (much more powerful than my last machine at any rate) and I have noticed that after some time all of a sudden X11 starts to ...
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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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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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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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372 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 ...
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17 views

Can I raise the CPU usage of a application on Ubuntu?

I'm using GNU/Octave a lot, and sometimes I want to leave my computer alone doing some calculations while I'm working with something else (somewhere else). Using the system monitor, I see that Octave ...
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32 views

Strange CPU Usage History

My CPU history graph on the task manager is acting strangely. The fan also seems to be "revving". Here is an image of what is happening. This is my laptop and the processor is Intel core i5. ...
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110 views

Windows 8.1 and Android Lollipop USB Tethering strange behavior

I have a problem under Windows 8.1 when I try to use internet through an Android USB Tethering... I have a nexus 5 and when I enabled the USB Tethering, it works fine (I can navigate and use ...
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46 views

High CPU in Windows 8.1 but can't access Windows backup as per previous answers

Since unfortunately needing to purchase a laptop while WIndows 8.1 is the norm, I've been plagued with problems of high CPU. After a month of use, I inadvertently logged into the Windows Store and ...
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93 views

“System” process high cpu usage

I've been noticing the cpu usage go up, back down for a couple minutes, and then go up again, and vice-versa... Not constant but it happened several times. (almost always up to 23% cpu constant when ...
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69 views

Does running CPU intensive tasks wear down my computer?

I do a lot of statistical analysis in R (which uses a lot of CPU and RAM). Whenever I run my analysis, my laptop's fan runs at top speed. Monitoring tool shows that 1 of my cores runs at 100%, the ...
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236 views

Very high CPU usage on Linux server

I have the following server: Ubuntu 14 LTS 64 bit Linode Hosting fail2ban enabled firewall enabled SSH root login diabled and only key access to server. Problem: When I run htop, it shows high ...
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44 views

how do i make pppoe use less cpu ?

The new ISP i switched to uses pppoe. So on my old linux (centos 6) router i decited to install a pppoe client and configure as necessary. I say old because it's a pentium III 850 mhz with 128 MB ram ...
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60 views

Init process consuming more than 200 percent cpu

The init process is consuming more than 200 percent of the CPU time on my vServer, which is running Debian 7. Also, my SSH connection becomes very unresponsive after a while. USER PID %CPU %MEM ...
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55 views

How to measure CPU cores usage for a single process?

Is there a way to see which and how many cores are used by single process on Windows server 2008 R2? I have tried Windows task manager and Process explorer but without any success.
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20 views

How does collectl summarize its numbers?

I'm analyzing the processor usage of a system over the course of 24 hours. I have collectl set to record sysT and usrT every five seconds, but for some long-running processes this results in thousands ...
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55 views

Dual core CPUs stall with Docker on Ubuntu Linux

I have seen performance degradation after half an hour to one hour with machines running Celery (Django/Python), or Storm under Docker containers with Ubuntu base on Dual-core CPUs on AWS. I see ...
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0answers
22 views

CPU Utilisation Snapshot report

I want to write a script to monitor CPU Utilisation, and upon the utilisation going above a threshold, create a brief text report on the router. I'm trying to get the the bottom of why some of our ...
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0answers
31 views

MacAfee On Access Scanner won't end Windows 8

My computer is operating quite slow, and after opening the task manager I have determined that Macafee on access scanner is occupying 65% of CPU load (sorry if this is not worded right). My computer ...
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98 views

avg consumes all cpu when github running

I am running a Windows 8.1 machine, on which I have installed Github for managing my repositories, and AVG antivirus. I noticed there is some kind of conflict between these two, as AVG consumes all ...
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174 views

Is a Dell XPS 15 L502x with three 24" monitors (1920 x 1200) possible?

I'm at a crossroads and need some PC advice. I'm a web developer so I'll have a few local web and DB servers running, maybe Photoshop and or Illustrator, any number of MS Office programs running, SQL ...
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0answers
75 views

Starting any process and suspending it lowers CPU from ~50% to ~5% in Vista, Why?

While doing a little housekeeping on a Windows Vista installation, I discovered that suspending any winlogon.exe subprocess would lower the CPU usage from the normally observed 50% usage down to ...
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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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0answers
190 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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0answers
295 views

Why is the clock speed readout greater than the maximum?

(click for full-size image) What is this madness? (I'm aware that the top number refers to the non-Turbo Boosted clock speed, but what of the others?)
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649 views

Is it normal for WmiPrvSE.exe to consume 10% CPU non-stop?

Resource Monitor shows Average CPU for WmiPrvSE.exe is 10%. Is that normal? This is just a 64-bit Vista laptop with an Intel P7550 (Core 2 Duo @ 2.26GHz) and 4G RAM. It's not running anything special ...
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98 views

Firefox Consumes A Lot Of RAM After Security Update

All was okay before 3.6.18 but after security update it started eating a lot of RAM and spiking frequent high CPU usage. Here are screenshots: Currently have running Internet Explorer 8.0, Chrome ...