GNU bug report logs - #66288
29.1; Performance regression using pipe for subprocess

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From: Dmitry Gutov <dmitry <at> gutov.dev>
To: Gregory Heytings <gregory <at> heytings.org>, Eli Zaretskii <eliz <at> gnu.org>
Cc: gerd.moellmann <at> gmail.com, 66288 <at> debbugs.gnu.org, cph <at> chris-hanson.org
Subject: bug#66288: 29.1; Performance regression using pipe for subprocess
Date: Wed, 4 Oct 2023 00:26:50 +0300

On 03/10/2023 23:58, Gregory Heytings wrote:
> 
>>
>> The usual suspect -- long-line optimizations --
>>
> 
> "Usual suspect"???
> 
> The culprit here is a947c10d90.

If it is indeed the problem change (though I wonder about the exact 
mechanics for the slowdown this noticeable), then instead of outright 
reverting it, I suggest trying out patch 0002 from this set:

https://debbugs.gnu.org/cgi/bugreport.cgi?bug=66020#61

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