Top "Cpu" questions

What does "rep; nop;" mean in x86 assembly? Is it the same as the "pause" instruction?

What does rep; nop mean? Is it the same as pause instruction? Is it the same as rep nop (without …

assembly x86 x86-64 cpu machine-code

VisualVM and Self Time

I've been searching all over for a consistent and clear explanation of what 'self time' actually refers to in the …

java performance profiling cpu visualvm

Get CPU Temperature

I want to get the CPU temperature. Below is what I've done using C++ and WMI. I'm reading MSAcpi_ThermalZoneTemperature, …

c++ windows winapi cpu temperature

Android: Your CPU does not support VT-x

Your CPU does not support VT-x. Intel HAXM is required to run this AVD. Your CPU does not support VT-x. …

android android-emulator cpu hyper-v

High CPU usage of javascript - How to debug?

What is the best way to find the cause of high cpu usage of javascript? I have a script that …

javascript jquery performance debugging cpu

How exactly does the callstack work?

I'm trying to get a deeper understanding of how the low level operations of programming languages work and especially how …

assembly cpu callstack low-level calling-convention

Alignment along 4-byte boundaries

I recently got thinking about alignment... It's something that we don't ordinarily have to consider, but I've realized that some …

c++ cpu alignment internals

When are x86 LFENCE, SFENCE and MFENCE instructions required?

Ok, I have been reading the following Qs from SO regarding x86 CPU fences (LFENCE, SFENCE and MFENCE): Does it …

multithreading assembly x86 cpu memory-fences

How does the CPU do subtraction?

I have some basic doubts, but every time I sit to try my hands at interview questions, these questions and …

math cpu hardware subtraction alu

What is the difference between CUDA core and CPU core?

I worked a bit with CUDA, and a lot with the CPU, and i'm trying to understand what is the …

cuda cpu