[racket] drracket editor running too slow

From: Matthew Flatt (mflatt at cs.utah.edu)
Date: Sun Mar 27 09:28:56 EDT 2011

At Sun, 27 Mar 2011 09:23:49 -0400, Neil Van Dyke wrote:
> What I *am* noticing with Racket 5.1 on Debian Lenny is that 
> progressively changing the DrRacket window layout with mouse drags 
> (e.g., dragging to resize window, or dragging to move the sash between 
> the Definitions and Interactions subwindows) is crazy-slow.

Is the latest version any better?

> Looks like probably the common problem of keeping scheduling more 
> re-layouts and repaints, even requests for the same are still pending.  

I think the problem was tracking drag events too precisely. I changed
mouse reporting to "hint" mode (weeks ago), which doesn't report every
single place the mouse visits, and that solved the problem on my

Posted on the users mailing list.