Re: sleep-for documentation and how to pause reliably

[Eli Zaretskii]

> Date: Sun, 17 Feb 2013 19:58:13 +0800
> From: Xue Fuqiao <address@hidden>
> Cc: Thierry Volpiatto <address@hidden>, address@hidden
> 
> > I never see anything close to 20 sec, neither on Windows nor on
> > GNU/Linux.  The first evaluation takes a little longer (perhaps a
> > second or two) until I see "hi", but I think this is due to a cold
> > cache that makes start-process-shell-command slower.
> 
> Just a question: what does "cold cache" mean?

I meant the disk cache.  A cold cache (as opposed to a warm cache)
means that the files your program reads are not in the cache, and need
to be physically read from the disk.