Re: w32-pipe-read-delay (was: vc-dir operation is very slow on large git repositories in Emacs 26.1)

[Eli Zaretskii]

> From: Alex Harsanyi <address@hidden>
> Date: Sat, 23 Jun 2018 21:32:24 +0800
> 
> Oops, above I meant to say 0.08, not 0.8, here some sequential runs with
> `w32-pipe-read-delay` set to 0 and `w32-pipe-buffer-size` set to 0:
> 
>     time-process: it took 0.08 seconds
>     time-process: it took 0.14 seconds
>     time-process: it took 0.09 seconds
>     time-process: it took 0.14 seconds [2 times]
>     time-process: it took 0.14 seconds
>     time-process: it took 0.09 seconds
>     time-process: it took 0.14 seconds
>     time-process: it took 0.11 seconds
>     time-process: it took 0.13 seconds
>     time-process: it took 0.09 seconds
>     time-process: it took 0.14 seconds
>     time-process: it took 0.09 seconds

I'm confused: w32-pipe-buffer-size is zero by default, so what can we
learn about it from the above experiment?