Programm bei laufender IDE schneller - Warum?

[BigAl]

Nochmal ich... Habe zum Test mal schnell ein kleines Programm "hingesaut". Solange die IDE auf dem Rechner läuft macht die Thread knapp 100 Zyklen / Sekunde. Ist die IDE nicht gestartet, so kommt die Thread gerade mal auf ca. 63 Zyklen / Sekunde.

Der Quellcode:

Code:

unit Main;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ExtCtrls;

type
  TForm1 = class(TForm)
    Timer1: TTimer;
    Label1: TLabel;
    lblCount: TLabel;
    Label3: TLabel;
    lblCountsPerSec: TLabel;
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
  private
    { Private-Deklarationen }
    OldCount: Integer;
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

type
  TTestThread = class(TThread)
  private
    procedure Execute; override;
  public
    Count: Integer;
  end;

var
  TT: TTestThread;

procedure TTestThread.Execute;
begin
  while not Terminated do
  begin
    Sleep(10);
    Inc(Count);
  end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  TT := TTestThread.Create(False);
end;

procedure TForm1.FormDestroy(Sender: TObject);
begin
  TT.Terminate;
  TT.WaitFor;
  TT.Free;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
  lblCount.Caption := IntToStr(TT.Count);
  lblCountsPerSec.Caption := IntToStr(TT.Count - OldCount);
  OldCount := TT.Count;
end;

end.

Und das Formular:

Code:

object Form1: TForm1
  Left = 0
  Top = 0
  Caption = 'Form1'
  ClientHeight = 148
  ClientWidth = 376
  Color = clBtnFace
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -11
  Font.Name = 'Tahoma'
  Font.Style = []
  OldCreateOrder = False
  OnCreate = FormCreate
  OnDestroy = FormDestroy
  PixelsPerInch = 96
  TextHeight = 13
  object Label1: TLabel
    Left = 24
    Top = 24
    Width = 43
    Height = 13
    Caption = 'Counter:'
  end
  object lblCount: TLabel
    Left = 112
    Top = 24
    Width = 39
    Height = 13
    Caption = 'lblCount'
  end
  object Label3: TLabel
    Left = 24
    Top = 48
    Width = 77
    Height = 13
    Caption = 'Counts/Second:'
  end
  object lblCountsPerSec: TLabel
    Left = 112
    Top = 48
    Width = 77
    Height = 13
    Caption = 'lblCountsPerSec'
  end
  object Timer1: TTimer
    OnTimer = Timer1Timer
    Left = 276
    Top = 92
  end
end

Ich bin ratlos...

Hat wer 'ne Idee???

Alex