Re: emacs rendering comparisson between emacs23 and emacs26.3

[Stefan Monnier]

>> >> 16s in one case a "10 seconds freeze": it sounds to me like you *do*
>> >> reproduce the problem.
>> > Not really.  In the 16s case redisplay kicks in and displays the buffer
>> > 250 times.  In the 10s case redisplay stops after five times.
>> 
>> Yes, but the underlying problem remains: it takes 10-16s to do the work,
>> so if the corresponding input events come in over a period shorter than
>> 10-16s Emacs won't be able to keep up.
>
> I think "the work" of a single scroll-up takes less (much less) than
> 10-16s.

Indeed, IIUC his measurement of 10-16s is for the equivalent of about
50 scrolls.


        Stefan