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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Is it possible to change the recv buffer size dynamically
 for network process or subprocess?
Date: Sun, 29 Mar 2020 05:38:18 +0300
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Cc: rpluim@gmail.com, monnier@iro.umontreal.ca, emacs-devel@gnu.org
To: HaiJun Zhang <netjune@outlook.com>
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 (message from HaiJun Zhang on Sun, 29 Mar 2020 09:44:41 +0800)
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> Date: Sun, 29 Mar 2020 09:44:41 +0800
> From: HaiJun Zhang <netjune@outlook.com>
> Cc: monnier@iro.umontreal.ca, rpluim@gmail.com, emacs-devel@gnu.org
> 
> For example, when I run find or grep in a directory with plenty of files, the output of the subprocess may
> continue for 1 minute, while I can’t stop it.

That doesn't use network communications, so it is not relevant to the
issue at hand.