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

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svchost.exe using lots of memory slowing my PC down [duplicate]

On my Windows 7 32-bit. svchost.exe is using lots of Memory and slowing my PC down big time. I already have auto update turned off and it is on manual mode. How can I fix this problem? Thanks
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1answer
3k views

Windows 8.1 high System process CPU usage due to MmTrimAllSystemPagableMemory, why?

Every once in a while (I can't pin down exactly when, but it seems to be correlated with when the computer is idle for a while), the System process on my Windows 8.1 x64 machine suddenly starts using ...
0
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1answer
60 views

Constant CPU utilization on consumer hardware [duplicate]

A computer in a manufacturing environment is running software that is in a constant communication loop with a PLC. An artifact of the implimentation is ~20-30% CPU utilization 100% of the time (24/7). ...
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1answer
1k views

Intel 3945ABG DPC spikes (audio stutter, mouse) in Windows 8.1

As reported by many users, Intel WiFi chips such as 3945ABG and the later 4965 may experience CPU spikes due to DPC activity. This is typically experienced as: Audio stuttering. Uninterrupted ...
0
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1answer
162 views

Disabling CStates/TurboMode in Windows

In Linux I know how to boot and have cstates disabled to get full CPU power. How is this done in Windows? Does it vary based on Intel and AMD?
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1answer
189 views

How a scheduler is scheduled?

A scheduler being a system program must be scheduled for execution so that it can wake up and schedule other programs. I read about process scheduling and algorithms but couldn't figure out how a ...
6
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2answers
6k views

How to increase Python's CPU usage

I use Python to execute some algorithms and no matter which Python I use, and I have tried many versions, the CPU usage goes to 25% max. Why doesn't Python take advantage of the rest of my CPU ...
2
votes
1answer
599 views

How to increase the cpu utilisation of a process in windows 8

I am doing a project for my college using WEKA, I am classifying a very large text file(300MB). But it is a very slow process. I looked in the task manager and I saw that weka uses only 10% of the ...
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1answer
4k views

Is disabling the Windows 7 Desktop window manager a bad idea?

I'm thinking about disabling the dwm.exe process. It seems that I can do fine without the fancy feature of [Wind]+[Tab], and am generally needing to cut memory. Does it have unintended side-effect?
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1answer
1k views

What does CPU usage for a process actually mean

Assume the computer has a single core - what exactly does it mean for process A to be running at 100% CPU capacity vs (lets say) 10% CPU capacity. If the CPU was 2.0 GHz, does that mean in a time ...
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2answers
100 views

BOINC exclusive applications aren't triggering a suspend

I have BOINC running 24/7 and want to have it temporarily suspend while I am compiling large Visual Studio projects to speed things up. As things currently stand, the compiler and BOINC seem to fight ...
3
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1answer
6k views

Root cause for high CPU usage; which measurement to trust more: Windows Task Manager or Process Explorer?

Consider this Windows 8.1 machine (in-place upgrade from Windows 8) with differing reports on its CPU usage. The machine is idle, and has been for 3 days. There are no CPU intensive tasks running ...
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2answers
1k views

Control Linux CPU load for testing

I wish to carry out some testing on a range of Linux devices to see their power consumption based on current processor load. As such I am looking for a program I can use to force the CPU to use X% ...
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0answers
276 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 ...
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2answers
4k views

How can i fix my low CPU usage?

I have a very expensive pretty new computer, (Asus rampage III Extreme) (Intel i7 980x) and 2 (nvidia gforce 580 SLI). So it is a good computer, but when I play games like Borderlands 2 I get much ...
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0answers
81 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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0answers
135 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 ...
0
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1answer
123 views

How to stress the Windows XP kernel?

We have intermittant problems with writing DVDs where the writing process fails. We suspect that the problem is happening when the DVD driver switches from DMA mode to PIO mode and then in this mode ...
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2answers
492 views

Reducing RAM and CPU usage on a specific manually selected process

I'm using a very nice desktop software for Gmail (and other email providers): Mailbird. But it consumes too much RAM and CPU, so I have to close it sometimes. I'd like to know if there is any ...
0
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1answer
609 views

Is using top a robust way of measuring system CPU usage?

I got confused while reading this question on stack overflow. The asker says: "'top' will simply not do, as there is a delay between cpu dumps, it requires 2 dumps and several seconds, which hangs ...
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2answers
6k views

High CPU usage by dwm.exe when nothing is happening

Setup: Windows 7 Ultimate, running in a VMware box inside Windows 8, VMware Tools installed; VMware Workstation is the only application launched in win8). Aero is on. Starting a few months ago, on ...
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1answer
729 views

pdf viewer / reader with multi-core support? [closed]

Which pdf reader/viewer supports more than one core to render and search through pdf files? evince does not okular does not Adobe Reader does not Xpdf crashes on all my tested pdf documents ...
3
votes
1answer
1k views

Why is the kernel and the watchdogs consuming all the CPU?

I run a bunch of heavy user space processes on a powerful Xeon machine (32 virtual processors according to /proc/cpuinfo). The CPU load is normally around 30 and the machine feel responsive, but later ...
0
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1answer
86 views

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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0answers
2k 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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1answer
1k 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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votes
2answers
4k 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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1answer
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
1k 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
614 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
2k 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
210 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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0answers
265 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
215 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
178 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 ...
4
votes
3answers
12k 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
591 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 ...
0
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1answer
726 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 ...
2
votes
1answer
117 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 ...
4
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0answers
3k 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
300 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 ...
2
votes
3answers
5k 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 ...
0
votes
1answer
240 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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0answers
547 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 ...
0
votes
1answer
199 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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2answers
62 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
560 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
1k 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
723 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 ...