[plt-dev] JFYI editor performance note

On Apr 17, 2009, at 6:49 PM, Matthew Flatt wrote:

> At Fri, 17 Apr 2009 13:48:57 -0700, John Clements wrote:
>> 1) I can get *way* ahead of the keystroke buffer.  In particular,  
>> if I
>> type 160 characters quickly, it takes svn head 15 seconds to get them
>> all onto the screen.  In 4.1.4, on the other hand, DrScheme takes  
>> them
>> as fast as I personally can type them, in this case 154 chars in 5
>> seconds.  So, this is at least 3 times as fast, possibly much more.
>
> I was able to see the same effect with my old PPC machine. This is now
> fixed in SVN.
>
> The problem was that every keystroke would trigger a redraw for the
> whole canvas, instead of just the line where the character was
> inserted.

Many thanks!

John


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