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Re: Optimising Elisp code [again]

From: tomas
Subject: Re: Optimising Elisp code [again]
Date: Mon, 8 Oct 2018 16:43:22 +0200
User-agent: Mutt/1.5.21 (2010-09-15)

On Mon, Oct 08, 2018 at 04:11:14PM +0200, Emanuel Berg wrote:
> Garreau, Alexandre wrote:
> > I kind of forgot why jumps are slow
> Isn't it as simple as all the overhead of
> placing the new function on the stack with
> return pointers and stuff?

And cold caches, and pipeline stalls and...

Modern processors are quite complex beasts, and much of it has to
do with the sad fact that RAM is much, much, MUCH slower than the
CPU, and they try to lie to you about it...

-- tomás

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