Questions tagged [cpu]

The part of a computer responsible for performing computations, often referred to as a processor.

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Is there a way to limit cpu usage per tab in Firefox?

Opening 20+ tabs in Firefox inevitably leads to a situation where 2-3 tabs are constantly using a fair amount of CPU, slowing the entire system down. I wonder if it's possible to impose a limit on ...
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No POST screen, No beeps and No display

I have very old motherboard , CPU , power supply. Motherboard : Gigabyte G31M-ES2C CPU : Intel Pentium Dual Core E2160 @ 1.8GHz Ram : Transcend 2GB ddr2 800MHz. Power supply : Tech-Com 450Watt....
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Microsoft Edge - High CPU Usage

Microsoft Edge has abnormally high CPU Usage on my computer, just upgraded to Windows 10. When I open cnn.com in it, it consumes about 50% of my CPU even after the page loads, for a SINGLE tab. When I ...
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1answer
585 views

CPU Whine with USB mouse inserted while on battery

I have a Lenovo Thinkpad Edge E520 that emits a high pitched whine from the top lefthand area of the keyboard when a 2.4ghz wireless USB mouse is inserted. The sound is a lot louder while on battery ...
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1answer
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How does the Windows 10 scheduler deal with Hyper Threading since Core Parking is disabled by default for Intel CPUs?

I'm running Windows 10 (1607) on an Intel Xeon E3-1231v3 CPU (Haswell, 4 physical cores, 8 logical cores). When I first had Windows 7 installed on this machine, I could observe that four out of eight ...
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Not an experienced user. New (2 months) Sony Vaio running slow as hell. 100% CPU usage, 100% Disk usage, cooling fans at full speed most of the time

I'm not too computer savvy so sorry if I'm missing something important or I say something dumb. I'm really frustrated and I'm trying my best to learn and solve this problem. So I bought this Vaio ...
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559 views

Since upgrade from linux 4.6 to (4.7, 4.8), %CPU is always 0; the frequency is unknown

Since the upgrade to linux kernel 4.7 (Debian Stretch), it seems that my system (Aurora-R4 i7 3820) is a bit slower (short hangs sometimes) and the most strange thing is that I can't see anymore the ...
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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 ...
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1answer
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Windows 7 gets stuck with ~1% CPU. Especially with multithreading

Windows 7 32 bit, up to date, Intel i7 860. (For some reason the company runs 32bit Windows everywhere.) I tried to update all motherboard drivers etc. as far as possible. I have a performance issue ...
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1answer
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Bent processor socket pins LGA1155 after overheating CPU

I have an i7-2600k (not overclocked) on an ASUS P8Z68 V-Pro motherboard that I was cooling using a Corsair H60 since last August. My A/C went out for a period of two weeks and my ambient temperature ...
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2answers
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Max RAM: CPU vs Motherboard

Looking to put together a cheap(er) server/workstation for doing some big statistical analysis. Right now, it's running on a machine with 16gb and we're using 40gb of swap. So I want to maximize ...
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Mac OS X Server 10.6.6 “disables” CPU in VMware Fusion

I installed Mac OS X Server 10.6.0 in VMWare Fusion the other night and it worked perfectly, until I ran Software Update. I upgraded to 10.6.6 through the combo updater, and now when I start the VM it ...
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1answer
46 views

How does the Docker daemon know about the available hardware resources?

We are running Docker on a RedHat VM on a VMWare hypervisor. When we added more virtual cores (vCPUs) to the VM the RedHat sees the additional resources and can address it but not the containers ...
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Is overheating a sign that I need a new CPU?

I have an HP Envy laptop. A while ago my CPU fan started dying, and the whole side of the laptop would heat up. I didn't use an application to check the CPU temperature, but I never experienced ...
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211 views

Antivirus is scanning and deleting infinitely generated temp files, causing high CPU usage

I am using Windows 10, and BitDefender Free Edition as Antivirus. Sometimes (it occurred not only once), I hear my CPU Fan spinning at very high speed and when I open my Task Manager to see what's ...
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60 views

Can I tell how much multi-threading I'm using each day?

Is there a way to determine (or even better, to log) how much benefit I'm getting from my computer's multi-threading capabilities? Background: My higher-ups are proposing to give me and my team new ...
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Windows is detecting the wrong CPU temps compared to Linux

I have a computer I built which has been rock solid for around a year or so and recently has been blue screening on me. When I do the usual spot checks I use new thermal grease on my H100i cooler. ...
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How to make Intel Turbo Boost to reach its maximum for testing cooling efficiency?

I noticed that Intel stock cooler occasionally gets really loud (oh, Intel, why did you make your stock coolers worse; SandyBridge ones were larger and quieter), so I will replace it with a third ...
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741 views

What are the risks of setting VirtualBox CPU count up to the *logical* CPU count?

The GUI and the documentation of VirtualBox warn about setting virtual CPU count higher than the physical CPU count: You should not, however, configure virtual machines to use more CPU cores than ...
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Crackling Audio issues on LACK of CPU load

I have been trying to track down an intermittent crackling audio issue for YEARS now to no avail. I've checked DPC, memory pagefiles, etc... back when I was running Win7 -- which also had the issue (...
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1answer
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Undervolting with Intel' XTU - which offset should you reduce?

It is a pretty basic question, but I could not find an answer to this via Google. The value you are supposed to adjust is the "voltage offset". However, there are two kinds of values in the utility ...
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How does an x86 processor recover from S2/S3 sleep?

I was reading through this page on how sleep states work in Windows and I was intrigued by the reset vector. My current understanding is that; When the system is in S2/S3, the processor is fully ...
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What CPU features does Windows 7 require?

I'm looking for the minimum CPU requirements for Windows 7. Specifically, I want to know if it requires SSE, SSE2, etc. Wikipedia states that SSE2 was a requirement for Windows 8, but it doesn't say ...
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1answer
630 views

I bent CPU socket pins! How to unbent them?

I have a Intel DG33FB motherboard with a LGA755 (Socket T) CPU socket and a 2.6 GHz LGA755 processor. I want to upgrade the processor but while doing so I accidentaly bent some pins on the CPU socket....
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Brand new rig experiencing terrible fps lag in games. Tried everything I can think of to fix it

I have an entirely new computer SPECS HERE (except for the ram which is ~5 years old) that has been running great. Today however, every game I play has been experiencing lag that makes them nearly ...
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Kernel Panic from overheating?

I believe my CPU is overheating which is causing a kernel panic and the machine reboots. It is an Intel 3612QE. I have changed the cpufrequtils scaling_governor to ondemand, conservative, and also ...
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1answer
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Reactivate Dormant Processes in Windows7

I have a very computationally intensive program (which I wrote in python) and starting two days ago I ran 6 copies of it in parallel (using 6 Cygwin terminals on a Mac Book Pro running Windows7 in ...
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1answer
88 views

Desktop remains on, display quits working, loud “skipping” noise follows

For the past 2-3 days, strange things have been going on with my desktop and its interaction with the monitor. While playing a game, my monitor went black as if my computer had been shut off. However, ...
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Should the CPU usage go up to 100% when swap happens on Linux

I had been running a demo system on Linux with the following kernel: 2.6.32-400.1.1.el5uek #1 SMP Mon Jun 25 20:25:08 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux And as soon as swap happens, the CPU ...
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1answer
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High CPU temperature of new Clevo w350ST Laptop

I just recently bought a new Clevo W350ST laptop. While everything has been working extremely fine in it, its the CPU temperatures on the laptop I am worried about. The Tj Max. for my processor (i7 ...
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Windows 8.1 Process Migration Limits CPU frequency scaling

Summary: I've noticed that with Windows 8.1 on my laptop, running a single CPU intensive program does not cause the CPU frequency to scale to its maximum value. I suspect that this is because of ...
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623 views

CPU i5 750 stuck at its idle multiplier. Even when used at max

My i5 750 seems to be stuck on the idle multiplier (9x) instead of the base speed of 2.66 GHz, even while loading using Prime 95 Configuration: i5 750 DP55WB desktop motherboard. 2GB DDR3 RAM PSU: ...
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CPU (?) clicking sound during resource-intensive tasks

I just bought a new computer (Lenovo Yoga 13, with integrated graphics and SSD). Whenever I bring it out of sleep, or do something resource-intensive (such as heavy Photoshop work), I hear a scratchy ...
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536 views

Alternative (cooler) CPU than a Intel Celeron M 420 1.6GHz?

I bought a broken Toshiba Satellite A105-S2101 laptop off eBay. It would freeze on the BIOS loading screen; I found out it was just a bad DVD drive. I replaced it and all is well, except it overheats ...
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1answer
380 views

CPU clock scales down so computer is unusable after switching to battery

When I am plugged in my laptop runs great however when I unplug it and I'm on battery power my CPU clock speed scales down pretty much all the way. I know this is happening by monitoring the clock ...
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1answer
271 views

Why are uploads maxing out CPU?

Some odd behaviour ... when sending / uploading files, my CPU usage goes to about 100%; Activity Monitor reports 'Kernel Task' as the culprit. I first noticed this when sending emails in Mail, but it ...
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1answer
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How to calculate the setting for BCLK with Core i7?

Help me figure out the proper calculation for overclocking a Core i7. Given that: the default maximum memory speed is 1333MHz, the motherboard supports up to 2200 MHz by overclocking, and it has a ...
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3answers
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Normal temperature for an i5 4670?

I've got an i5 4670, and according to HWMonitor the temperatures are around 70-80°C when not much is going on and sometimes go up to 90-100. This is too much for my CPU, isn't it? Can it be a problem ...
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2answers
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Computer with high specs lags for some reason. Don't know why

My computer has pretty decent specs. Windows 10.1 i5 3.7ghz processor 16GB Ram 4GB Nvidia GTX 980 Graphics Card CCleaner is run regularly. Over the last few weeks the computer has begun lagging and ...
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2answers
906 views

Game drops to 0 FPS and CPU Usage drops to 0%

So for about 2 weeks now I've experienced a problem while gaming. My frame rate would drop to 0 and my computer's CPU Usage would drop to 0% at the same time. This would stay this low for up to 30 ...
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New motherboard, fails to boot

I have an Asrock 760GM-HDV motherboard with an AMD FX 8300, 2x4GB HyperX DDR3 RAM and a GTX 750ti 2GB. I had a problem with an older motherboard that broke, so it was exchanged. With the new ...
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1answer
129 views

10Gb PCI-E 4x LAN card on CPU lane, built in intel graphics

Despite searching since a few days, no one seems to have such scenario, world being filled now with high end GPU fans :-) I have an ASUS ROG Strix Z390-F, powered with an i9-9900K. Available MB PCIE ...
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“.NET Core Host” hogging CPU

Since yesterday, on one of our Windows Server 2016 machines (hosted on Amazon AWS) we're seeing a spike in CPU utilization. The culprit seems to be ".NET Core Host", in fact if I check the task ...
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Hot CPU in ubuntu 18.04

I have problem in ubuntu 18.04 which was not occurred in ubuntu 16.04. My CPU got so hot nearly 70 degree Celsius and fan is running at maximum speed while there is no process running. I wonder if the ...
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1answer
369 views

How to undervolt a laptop CPU

I have a Dell Inspiron 7559 laptop and it's processor is core i7-6700HQ. I have read some articles about undervolting the CPU and its benefit and I want to do it for my laptop. I have some ...
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(Dual CPU) Server Motherboard with “big.Little” configuration?

I have several different workloads that have different requirements for the CPU. One is easily parallelizable, so it works best with many cores, even if they aren't individually very powerful. The ...
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0answers
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FFMPEG trimming videos on a docker low cpu setup

So I've been trying to combine multiple mp4s within a docker container running debian Stretch. I have the constraint of not being able to write the output mp4 file to disk, so I need to pipe ffmpeg ...
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0answers
348 views

Tomato Firmware producing high cpu load average (but low cpu usage)

I using an Asus RT-N18U router with the "Advanced Tomato" firmware with shibby's firmware under the hood. I recognized a constant cpu load average of 2.00, but at the same time a low cpu usage. "top" ...
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965 views

What process controls the CPU affinity of new python processes

I wrote code to set the affinity of every process under my username to core 0 only. I ran this code, and then it exited once it was finished. Then, even when I launched a brand new terminal, and ...
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1answer
549 views

How to check if CPU is dying?

Today began a problem on my CPU. The temperature is high (70C at startup, going higher with time) and the ressource monitor indicates that the frequency and CPU usage is rubber banding between 0 and ...