GNU bug report logs - #32728
Emacs slow when reading process output

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From: Eli Zaretskii <eliz <at> gnu.org>
To: "Benninghofen\, Benjamin Dr." <benjamin.benninghofen <at> airbus.com>
Cc: layer <at> franz.com, larsi <at> gnus.org, 32729 <at> debbugs.gnu.org, 32728 <at> debbugs.gnu.org
Subject: bug#32728: bug#32729: Xemacs 23 times as fast as GNU Emacs
Date: Fri, 25 Oct 2019 10:00:25 +0300

> From: "Benninghofen, Benjamin Dr." <benjamin.benninghofen <at> airbus.com>
> CC: "layer <at> franz.com" <layer <at> franz.com>, "32729 <at> debbugs.gnu.org"
> 	<32729 <at> debbugs.gnu.org>, "32728 <at> debbugs.gnu.org" <32728 <at> debbugs.gnu.org>
> Date: Fri, 25 Oct 2019 06:38:16 +0000
> 
> For me your discussion about the performance problem appears very theoretical.

I don't think it was theoretical.  It was an attempt to identify which
factor(s) affect(s) this issue, so that further investigation could be
more focused.

> Why do you not just compare the relevant GNU Emacs Source Code with the Xemacs Source Code?

Did you try doing that?  Every time I did I found that the code is so
different that any comparison is very hard at best, and usually simply
meaningless.

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