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 22:00:39 +0800
> Cc: address@hidden
> 
> Increasing w32-pipe-buffer-size has no effect on the speed of reading from 
> the pipe. I tried several buffer size values, in combination with several 
> read delay values, but only the read delay has an effect. For example, at 50 
> milliseconds read delay, it takes ~13 seconds to read 1 Mb of data, 
> regardless if the buffer size is set to 0, 4096, 8192 or 16384. 

OK, thanks for clearing this out.  It sounds like thee default value
of w32-pipe-buffer-size is doing fine, and w32-pipe-read-delay should
be reset to zero, which will probably happen in a future version of
Emacs anyway.