Re: Scrolling commands and skipping redisplay, was: Re: emacs rendering comparisson between emacs23 and emacs26.3

[Dmitry Gutov]

On 10.04.2020 09:13, Eli Zaretskii wrote:
> Not here, it isn't.  Scrolling gets stuck very often and for prolonged
> times in an unoptimized build.  In an optimized build, it gets stuck
> less often, but the scrolling is significantly slower than with
> jit-lock-defer-time set to 0.1.
>
> Did you try fast-but-imprecise-scrolling in an optimized build or in
> an unoptimized one?

As usual, '-Og -g3'.

But I'm comparing fast-but-imprecise-scrolling with jit-lock-defer-time 
set to 0, which is supposed to be its direct counterpart. And the latter 
adds flickering.

Higher values add flickering too, even more noticeably. But that seems 
unavoidable.