In the book Computer Systems: A Programmer's Perspective, the Exercise 5.5 shows a piece of code to compute the value of a polynomial double poly(double a[], double x, int degree) { long in...

Specifically is: mov %eax, %ds Slower than mov %eax, %ebx Or are they the same speed. I've researched online, but have been unable to find a definitive answer. I'm not sure if this is a sill...

What's the relationship between the real CPU frequency and the clock_t (the unit is clock tick) in C? Let's say I have the below piece of C code which measures the time that CPU consumed for runnin...

I am trying to find a reference for approximately how many CPU cycles various operations require. I don't need exact numbers (as this is going to vary between CPUs) but I'd like something relative...

I have been reading a book about the Computer's Processor. And I came across some of the terms like clock Ticks, clock Cycle and clock Speed that I am finding very difficult to understand. I ...

The task is for architecture ColdFire processor MCF5271: I don't understand how many and what size cycles will be needed to perform a longword transfer to the CPU, or word transfers. I'm reading...

I heard there is Intel book online which describes the CPU cycles needed for a specific assembly instruction, but I can not find it out (after trying hard). Could anyone show me how to find CPU cyc...

I am planning on creating a Sega Master System emulator over the next few months, as a hobby project in Java (I know it isn't the best language for this but I find it very comfortable to work in, a...

I have a RHEL box that I need to put under a moderate and variable amount of CPU load (50%-75%). What is the best way to go about this? Is there a program that can do this that I am not aware of? ...

The Intel manuals for the RDTSC instruction warn that out of order execution can change when RDTSC is actually executed, so they recommend inserting a CPUID instruction in front of it because CPUID...

What is the difference in CPU cycles (or, in essence, in 'speed') between x /= y; and #include <cmath> x = sqrt(y); EDIT: I know the operations aren't equivalent, I'm just arbitrari...

Taken from this SO thread, this piece of code calculates the number of CPU cycles elapsed running code between lines //1 and //2. $ cat cyc.c #include<stdio.h> static __inline__ unsigned l...

I am using an embedded RISC processor. There is one basic thing I have a problem figuring out. The CPU manual clearly states that the instruction ld r1, [p1] (in C: r1 = *p1) takes one cycle. Size...

In a Swing app a method should continue only after user enters a correct answer. The correct answer is stored in a String with user answer being set by a listener to another String. So, the code is...

In Win32, is there any way to get a unique cpu cycle count or something similar that would be uniform for multiple processes/languages/systems/etc. I'm creating some log files, but have to produce...