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

learn more… | top users | synonyms

4
votes
0answers
713 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. ...
3
votes
0answers
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 manager,...
2
votes
0answers
212 views

How to find the cause for high CPU usage of gnome-shell?

I'm on a Linux Fedora 23 and I recently noticed that my gnome-shell process constantly uses 100% of one CPU (reported by htop, no visible applications running). There are some hints out there which ...
2
votes
0answers
1k 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 ...
2
votes
0answers
362 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
votes
0answers
392 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
votes
0answers
289 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 bought!
2
votes
0answers
320 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
votes
0answers
589 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 ...
2
votes
0answers
311 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 ...
2
votes
0answers
283 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?
2
votes
0answers
226 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
votes
0answers
374 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 ...
1
vote
0answers
26 views

How to modify/re-position GUI element in taskmgr Windows 7?

For instance, Windows 7 x64 SP1. Is there any workaround or trick/tip (with resource editing tool, ect...) doing the reposition the number of graph in CPU usage history panel in Performance tab of ...
1
vote
0answers
312 views

Task manager inaccurately claims 100% cpu usage, high kernel time

Windows 10 x64 intel system. I've got a strange problem that, best I can tell, seems to be Task Manager balantly lying about CPU usage. Since today it will claim 100% CPU usage (128% in resource ...
1
vote
0answers
424 views

Windows 10 RTM (10240 or higher) idle high CPU Usage at 20% - 22% with Bootcamp MBP

I Just upgraded to Windows 10 10240 as an insider tester finding that this upgrade keeps my CPU Usage at 20%-22 range. I also made a clean install from latest ISO and the problem persist. Is ...
1
vote
0answers
1k views

Some processes high CPU usage in Windows 10

I installed Windows 10 and all the driver (BIOS included) from Dell site; luckily my laptop is Windows 10 compatible. 2 processes use a little too CPU, I'm talking about "System" and "Windows desktop ...
1
vote
0answers
660 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 ...
1
vote
0answers
228 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 ...
1
vote
0answers
39 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 ...
1
vote
0answers
40 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 ...
1
vote
0answers
272 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 ...
1
vote
0answers
52 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 ...
1
vote
0answers
176 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 ...
1
vote
0answers
169 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. ...
1
vote
0answers
139 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 ...
1
vote
0answers
704 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 ...
1
vote
0answers
100 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 ...
1
vote
0answers
505 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 minutes....
1
vote
0answers
837 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 ...
1
vote
0answers
860 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 ...
1
vote
0answers
317 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 ...
1
vote
0answers
794 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 ...
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
0answers
410 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 ...
0
votes
0answers
17 views

Linux cpu usages high but clock speed is low

I am running a game server (ark survival if it matters) on Ubuntu Linux 14.04 and when the number of users connected increases the CPU usages also increases, which is as expected. But the clock speed ...
0
votes
0answers
39 views

Inactive Firefox uses too much CPU (10% .. 30%)

On Ubuntu 14.04, I have a Firefox 46 with 30 tabs open. The Firefox window is minimized, I've been working with other programs in the last 3 hours. In top I can see that Firefox still uses between 10% ...
0
votes
0answers
37 views

How to get statistics of CPU throttling?

My dmesg output says that the CPUs are throttled, because of the temperature. [ 1283.260276] CPU3: Core temperature above threshold, cpu clock throttled (total events = 1) [ 1283.260277] CPU2: Core ...
0
votes
0answers
30 views

How to determine (in a given time span in the PAST) which were the top CPU-using processes?

Short question: How do I determine which were the top processes hogging the CPU (Windows 7 Home Premium quad-core laptop) in a period of time which started 15 minutes ago and ended 01 second ago ? ...
0
votes
0answers
60 views

Compiz consuming CPU on Ubuntu 15.10

My CPU seems to run "hot" all the time, and I noticed that it's compiz which is running at 100% all the time, sometimes on single core, sometimes on multiple cores. It may be related to multiple users ...
0
votes
0answers
110 views

Windows 10 running at 100% CPU usage even in safe mode

I have been trying to solve the issue with 100% CPU usage on Windows 10. I tried the following: Updated GPU and Intel drivers. Scanned the system for viruses with Malwarebytes, ESET Smart Security ...
0
votes
0answers
118 views

Ubuntu 14.04 - CPU load 100 percent

I haven't run/install anything since about a week ago, but yesterday when i logged on my laptop, and feel anything are slowly. So i checked CPU use with htop, everything went down. Some process use ...
0
votes
0answers
236 views

High CPU usage by Service Host: Local System (Win10, 64-bit): ntoskrnl.exe!KeSynchronizeExecution + others

Here are screen-shots from Process Explorer which identifies ntoskrnl.exe!KeSynchronizeExecution as one of the ever-running processes: I don't know what to do with this info and cursory google ...
0
votes
0answers
18 views

CPU frequency scaling max frequency

I'm able to cap the frequency of my laptop to 800MHz, but I notice the cpu usage almost doubles. Are there any long term negative effects to not letting the cpu manage it's frequency dynamically? I ...
0
votes
0answers
33 views

Gaming framerate drop issue, and CPU temp display of 206 C

First and foremost, thank you to anyone who helps me on my journey to diagnose my computer issue. It is MOST appreciated. Before I start, let me give a display of what exactly my computer is running: ...
0
votes
0answers
32 views

Linux top (procps) discrepancy in numbering of CPUs for process list vs summary

I am using the top utility on a CentOS 6.7 system (procps version 3.2.8) and am observing inconsistent numbering in its output. My box has an Intel(R) Xeon(R) CPU E5-2690 v2 which has 10 cores with ...
0
votes
0answers
35 views

CPU usage command line

I want to get the cpu usage. I tried this command top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | awk '{print 100 - $1}' Could you confirm if this command is correct? The OS is ...
0
votes
0answers
55 views

Connecting to ProFTPd causes high load in polkitd and accounts-daemon

I installed ProFTPd and it is working fine, but when I connect to it from another machine, both polkitd and accounts-daemon jump to 100% CPU usage. How can I prevent that, or even find out what it ...
0
votes
0answers
47 views

Running peer block lowers the CPU usage - Am I being hacked?

Why is it when I start peer block my CPU usage goes down 20%? I've been using peer block not because IO'm file sharing but because I just want to better secure my computer. I use its default p2p ...
0
votes
0answers
101 views

Maximize CPU core usage on VPS

I have a server at OVH with 32 cores. All the cores are not fully utilized. Is there any way I can distribute CPU load on all the cores so that my system doesn't send me false alerts? Sometimes it ...