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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: A Modest Proposal
Date: Wed, 04 May 2016 17:54:35 +0300
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To: Stefan Monnier <monnier@iro.umontreal.ca>
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> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Date: Tue, 03 May 2016 23:56:40 -0400
> 
> > Yes. Listing files using external tools is usually faster.
> 
> Is the difference sufficiently large to be noticeable in dired?

Last time I tried, it was.  But maybe someone should try again, and
show the numbers.

Our algorithm in ls-lisp and the primitives it employs is definitely
less optimal than what 'ls' does, but I cannot estimate the
quantitative effect of that.