cycle lengths of instructions?

[Allasso]

Hello,

Is there a reference anywhere that I can find out the number of cycles each instruction takes for ia-32 processors?

I do not find this information in the docs, neither has much googling come up with anything.

Thanks,

Allasso

[Tight_Coder_Ex]

Here is http://www.penguin.cz/~literakl/intel/intel.html instruction set with clocks

Keep in mind, in a multithreaded operating system, cycles are only realative as other concurrent processes are using CPU at same time, which will affect the throughput of application of interest.

[Allasso]

perfect, thanks.

regarding your comment, I am assuming however, that it is still best to choose the combination of instructions that result in the fewest clocks (as if the program were the only thread) within a given program, no?

[Allasso]

...it would be nice to find this on the pentiums as well. And all the rest out there...

[Tight_Coder_Ex]

Definately, as that is what I try to do with my apps, espcially those with high interation loops. I found that link pretty easy, so maybe do your query more like a question that keywords.