I have a fever. I'll try again in three or four days. On Sat, Jan 4, 2025, 20:05 Eli Zaretskii wrote: > > From: Eval Exec > > Date: Sat, 28 Dec 2024 21:31:28 +0800 > > Cc: 74813@debbugs.gnu.org > > > > Friendly Pong. I'm busy these days. I will upload a reproducible > > minimal init.el tomorrow. > > Did you have time to come up with a reproducible recipe? > > > > > On Sat, Dec 28, 2024 at 6:59 PM Eli Zaretskii wrote: > > > > > > > Cc: 74813@debbugs.gnu.org > > > > Date: Thu, 12 Dec 2024 11:11:45 +0200 > > > > From: Eli Zaretskii > > > > > > > > > From: Eval Exec > > > > > Date: Thu, 12 Dec 2024 15:59:51 +0800 > > > > > > > > > > > > > > > I opened a large rust file, about 5000 lines. > > > > > scroll-up is quick and smooth, no laggy: > > > > > [...] > > > > > > > > > > but scroll down is very laggy: > > > > > > > > > > 2667 87% - command-execute > > > > > 2666 87% - funcall-interactively > > > > > 2666 87% - evil-scroll-page-up > > > > > 2666 87% - scroll-down > > > > > 2665 87% - apply > > > > > 2664 87% - ad-Advice-scroll-down > > > > ^^^^^^^^^^^^^^^^^^^^^ > > > > > 2663 87% - # > > > > > > > > First, you have an advice on scroll-down. > > > > > > > > Furthermore, scrolling down exposes portions of a file that were > never > > > > seen before, which needs to fontify them. If fontification is > > > > expensive, it is expected that you will see some lags. What happens > > > > if you scroll down, then go back to the beginning, and then scroll > > > > down again -- is scrolling down the second time much faster? > > > > > > > > Also, you didn't say which major mode did you use for this file. > > > > > > Ping! Can you please answer my questions? > > >