[plt-scheme] Appalling performance of DrScheme on Windows

From: Matthias Felleisen (matthias at ccs.neu.edu)
Date: Mon Jun 19 18:50:22 EDT 2006

This sounds indeed like an appalling response time and it makes me 
wonder why some 10,000 people are using DrScheme on Windows. Now I am 
using DrScheme on Windows XP only via Virtual PC on a Mac OS X laptop 
and it runs very nicely there. On my Mac, I am running "large" programs 
(up to 5,000 lines, threaded) in DrScheme, leave the environment open 
for days and weeks at a time, and haver very few problems of this kind.

But before we bash Microsoft one more time on this list, let's 
investigate your report in some detail. We don't want to blame them for 
nothing, right?

1. What kind of machine do you own? CPU speed and memory are two things 
we'd really like to know.

2. Which PLT Scheme implementation are you running? 350? 103p1? 
Anything in between?

2a. Have you modified your PLT Scheme installation in any form or 

3. What kind of programs do you run? Are they text-book exercises? 
Dynamic flow equations?

Once we have that information we will figure out how to get you to use 
this thing in an acceptable manner.

Thanks for the report -- Matthias

On Jun 19, 2006, at 6:31 PM, wooks wooks wrote:

> I am running DrScheme on Windows XP and I regularly experience abysmal 
> response time running DrScheme.
> Usually its starts off ok but the longer its left running the worse 
> the response time gets (especially if you leave a session idle for a 
> long time). It is not uncommon for me to manage only 4 interactions in 
> an hour because DrScheme just hangs for ages before it will accept 
> input.
> Previously I had the same problem running under Win2k. I thought it 
> would go away when I bought a new machine last year runnnig windows XP 
> but its just as bad.
> It is pretty much impossible to use the environment with this sort of 
> response time.
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