[plt-scheme] Drscheme boost programs performance

From: Jos Koot (jos.koot at telefonica.net)
Date: Thu Feb 19 09:53:13 EST 2009

Nice to hear this. For a moment this thread worried me, for I always run 
from DrScheme (usually debugging switched off and modules first compiled 
with managed-compile-zo and debugging switched off) I hate typing shell 
commands and I love the simple way PLT Scheme can be downloaded/installed 
and the way DrScheme can be used without having to worry about shell 
scripts/commands (untill a decade ago I was an expert in producing reliable 
scripts, though)

>From time to time, I experience severe slow downs too, but they can always 
be tracked down to Fsecure and HP-digital-monitor (under Windows XP that is) 
Even in a completely clean system, without any application running, they 
sometimes consume 25% of CPU time. When I really want all of my CPU, I first 
restart my system without connection to any network and without printer, 
virus protection and firewall.
Thanks, Jos

----- Original Message ----- 
From: "Robby Findler" <robby at eecs.northwestern.edu>
To: "Noel Welsh" <noelwelsh at gmail.com>
Cc: <plt-scheme at list.cs.brown.edu>
Sent: Thursday, February 19, 2009 3:07 PM
Subject: Re: [plt-scheme] Drscheme boost programs performance

> The currently released version of DrScheme does not disable the JIT,
> but it does add debugging annotations which have a significant
> performance impact. (For non-teaching languages, this can be changed
> in the language dialog.)
> Robby
> On Thu, Feb 19, 2009 at 7:53 AM, Noel Welsh <noelwelsh at gmail.com> wrote:
>> Just a note: code running under DrScheme is slower than the same code
>> running under MzScheme or MrEd. DrScheme disables the JIT, IIRC, so
>> that it can report better error messages. Try your code in MrEd.
>> N.
>> On Thu, Feb 19, 2009 at 1:36 PM, Jesus Boadas <jboadas at gmail.com> wrote:
>>> ...
>>> network, I also get some UI demos and play with It, reading 
>>> documentation
>>> and looking for some answers, but (IMHO) I get a slow feeling response 
>>> using
>>> the UI aplications (like a feeling using a .NET application, no as bad 
>>> as
>>> java-vm but slow than C/C++), ...
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