Re: Some performance questions.

[Ergus <spacibba@aol.com>]

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Hi Eli:

Thanks for replying. Is the GC also improved by tree-sitter? Because it is taking a significant  part of the time, as you can see in my first mail.

Thanks, 
Ergus




On February 8, 2023 9:15:11 PM GMT+01:00, Eli Zaretskii <eliz@gnu.org> wrote:
>> Date: Wed, 08 Feb 2023 22:09:36 +0200
>> From: Eli Zaretskii <eliz@gnu.org>
>> Cc: emacs-devel@gnu.org
>> 
>> > 71 45% Automatic GC
>> > 68 43% redisplay_internal
>> >          jit-lock-function
>> >              ...
>> >              font-lock-fontify-keywords-region
>> > 
>> > 37 23%          c-font-lock-declarations
>> > 20 12%          c-font-lock-cut-off-declarators
>> > 
>> > I have not observed such lags before on GNU/Linux, so some idea what I
>> > may be doing wrong?
>> > 
>> > I know Eli uses MS-Windows frequently, so, any hint?
>> 
>> Try using c-ts-mode instead (assuming this is Emacs 29 and it was
>> built with tree-sitter).
>
>And if you cannot use tree-sitter, then try this:
>
>  (setq jit-lock-stealth-time 16)
>  (setq jit-lock-defer-contextually t)
>  (setq jit-lock-stealth-load 20)

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.

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