Subject: bug#32728: bug#32729: Xemacs 23 times as fast as GNU Emacs

From: Eli Zaretskii <[email-masked]>
Date: Mon, 14 Oct 2019 13:18:30 +0300

> From: Lars Ingebrigtsen <[email-masked]>
> Cc: [email-masked],  [email-masked],
>   [email-masked],  [email-masked]
> Date: Mon, 14 Oct 2019 10:54:25 +0200
> 
> So what makes start-process 10x slower than call-process?

The fact that it goes through pselect, and only accepts the process
output when Emacs is idle?

> this obviously requires a more in-depth dive into process.c.

Agreed.