[plt-scheme] Appalling performance of DrScheme on Windows

From: wooks wooks (wookiz at hotmail.com)
Date: Mon Jun 19 19:32:02 EDT 2006

1. I am running a 1.3GHZ Celeron processor with 248MB of RAM (is that the 
info you wanted).
2. DrScheme 301
2a Apart from installing the SimplyScheme teachpack - no (we've discussed 
this before).
3. Just working my way through HTDP - on chapter 11 at the mo.

----Original Message Follows----
From: Matthias Felleisen <matthias at ccs.neu.edu>
To: "wooks wooks" <wookiz at hotmail.com>
CC: plt-scheme at list.cs.brown.edu
Subject: Re: [plt-scheme] Appalling performance of DrScheme on Windows
Date: Mon, 19 Jun 2006 18:50:22 -0400

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 

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

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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