Re: Filtering out process filters

[Eli Zaretskii]

> Date: Thu, 5 Jun 2025 04:30:16 +0300
> Cc: dancol@dancol.org, arstoffel@gmail.com, emacs-devel@gnu.org
> From: Dmitry Gutov <dmitry@gutov.dev>
> 
> On 04/06/2025 14:18, Eli Zaretskii wrote:
> > Btw, I still don't have a clear idea why the ACF method is so much
> > faster, since it basically does the same stuff.
> 
> Because it enables the fast-read-process-output's optimization?

That's not enough to explain the order-of-magnitude difference in
performance, IMO.  If you understand how this does explain it, please
elaborate: what part of non-fast-read-process-output path slows us
down so much?

> And the benchmark code (especially the buffer+acf route) does less 
> useful work than the previous benchmark, just exercising the passing 
> mechanism.

So you are saying that the speedup we see here is not the one we will
see in practice, if we actually reimplement, say jsonrpc using this
method?