From: Eli Zaretskii <eliz@gnu.org>
To: Yuan Fu <casouri@gmail.com>
Cc: emacs-devel@gnu.org
Subject: Re: Existing redisplay profiling tool?
Date: Sat, 14 Sep 2024 22:10:09 +0300 [thread overview]
Message-ID: <86y13udpbi.fsf@gnu.org> (raw)
In-Reply-To: <18DF89D6-9434-4F37-A14A-B9396A68A8F7@gmail.com> (message from Yuan Fu on Sat, 14 Sep 2024 11:20:15 -0700)
> From: Yuan Fu <casouri@gmail.com>
> Date: Sat, 14 Sep 2024 11:20:15 -0700
>
> I’m doing some optimization for tree-sitter font-lock, and want to measure the difference in a real editing session (rather than fontifying the whole buffer 10 times). I’m sure there’s some tool for measuring time spent in redisplay some where, but couldn’t find anything poking around.
How about using the scrolling benchmark through xdisp.c while
profiling?
(defun scroll-up-benchmark ()
(interactive)
(let ((oldgc gcs-done)
(oldtime (float-time)))
(condition-case nil (while t (scroll-up) (redisplay))
(error (message "GCs: %d Elapsed time: %f seconds"
(- gcs-done oldgc) (- (float-time) oldtime))))))
Evaluate the above, then turn on profiling, then type
"M-x scroll-up-benchmark RET" with point at beginning
of buffer that visits xdisp.c under c-ts-mode.
next prev parent reply other threads:[~2024-09-14 19:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-14 18:20 Existing redisplay profiling tool? Yuan Fu
2024-09-14 19:10 ` Eli Zaretskii [this message]
2024-09-16 6:16 ` Yuan Fu
2024-09-16 12:19 ` Eli Zaretskii
2024-09-17 2:49 ` Yuan Fu
2024-09-17 12:38 ` Eli Zaretskii
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