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Re: Q on performance with 10000 faces


From: Eli Zaretskii
Subject: Re: Q on performance with 10000 faces
Date: Mon, 22 May 2006 21:41:50 +0300

> From: "Drew Adams" <address@hidden>
> Date: Sun, 21 May 2006 23:26:00 -0700
> 
>     > Does this mean that Emacs cannot reasonably be expected to
>     > display 10000 face text-properties?
> 
>     AFAIK, yes.  Doing what you did (a) disables all possible display
>     optimizations that the redisplay engine has up its sleeve to speed up
>     the common cases, and (b) forces Emacs to traverse the 10000 text
>     properties for each character it is about to display.
> 
> What is it that you think I did that causes that? Perhaps I could do things
> differently. Do you mean just the fact of using 10000 different face text
> properties or something else also?

Are you still interested in the answers, given that Kim suggested a
different approach?

If you are interested, please post the shortest Lisp code that can be
used to reproduce and investigate this situation.




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