[willemjav]

ok threads and timer/ worker apart, that makes sense.

But still I´d like to understand why this:
for macbook -> end of loop 21256 teller 61
for pc -> end of loop 55079 teller 61

Code:

cont.clkset(7,237);    // starts the swingclock on 7 milli sec.
    starttime = System.currentTimeMillis();
        
    do {
        if (cont.getescFlag())  {
        exit=true;              //exit the soundblock
        }
       
       if (cont.clkpls>=tel*7 && tel<=60) { // clkpls augments with each 7 mili
         tel=tel+1;
         cont.ed.midi_vel(1,4,67+tel);
       }
     
       if (cont.clkpls>=50*teller) { 
         teller=teller+1; 
         System.out.println(" teller " + teller);
         if (teller>10 && teller<=40) cont.ed.midi_vel(5,8,97+teller-10);
       }

       if (teller==8)  cont.ed.midi_data(algemeen,"fdb",1,1,2);
       if (teller==12) cont.ed.midi_data(algemeen,"fdb",1,3,4);
       if (teller==14) cont.ed.midi_data(algemeen,"fdb",2,1,2);
       if (teller==19) cont.ed.midi_data(operator4,"lev",8,1,2);
       if (teller==23) cont.ed.midi_data(operator4,"lev",8,3,4);
       if (teller==25) cont.ed.midi_data(algemeen,"fdb",3,3,4);
       if (teller==29) cont.ed.midi_data(algemeen,"fdb",3,1,2);
       if (teller==31) cont.ed.midi_data(algemeen,"fdb",4,1,2);
       if (teller==34) cont.ed.midi_data(algemeen,"fdb",5,3,4);
       if (teller==38) cont.ed.midi_data(algemeen,"fdb",5,1,2);
       if (teller==40) cont.ed.midi_data(operator4,"lev",7,1,2);
       if (teller==43) cont.ed.midi_data(operator4,"lev",7,3,4);
       if (teller==45) cont.ed.midi_data(operator4,"lev",6,1,2);
       if (teller==49) cont.ed.midi_data(operator4,"lev",6,3,4);
       if (teller==52) cont.ed.midi_data(operator4,"lev",5,1,4);
       if (teller==53) cont.ed.midi_data(operator4,"lev",4,1,4);
       if (teller==55) cont.ed.midi_data(operator4,"lev",3,1,4);
       if (teller==56) cont.ed.midi_data(operator4,"lev",1,1,4);
       if (teller==57)  { 
         cont.ed.midi_data(operator4,"lev",0,1,4);
         cont.ed.midi_data(operator4,"d1r",6,1,4);
         cont.ed.midi_data(operator3,"lev",3,1,4);
         cont.ed.midi_data(algemeen,"fdb",7,1,4);
       }
       
     
       if (teller==12)  waarde=134;
       if (teller==19)  waarde=259;
       if (teller==23)  waarde=378;
       if (teller==30)  waarde=491;
       if (teller==37)  waarde=598;
       if (teller==43)  waarde=700;
       if (teller==52)  waarde=798;

       if (teller==6)  cont.ed.midi_vel(5,8,97);

       if (cont.clkpls>=tijd1) {
         tijd1=cont.ed.random(startgetal,80-teller,400-(6*teller))+tijd1; //?
        //System.out.println("tijd1 " + tijd1);
         if (teller<=58) { 
           boo1=false; boo2=false; boo3=false; boo4=false;
         }
         x = cont.ed.random(startgetal,1,4);
         y = cont.ed.random(startgetal,1,2);
        // System.out.println("boo1-4 " + x);
           if (x==1) boo1=true;
           else
           if (x==2) boo2=true;
           
           if (y==1) boo3=true;
           else
           if (y==2) boo4=true; 
       
       }    
       

       if (cont.clkpls>=7*i1)  {  //3
         i1=i1+1;
       
         if (boo1 || boo2)  {
           toon=cont.ed.random(startgetal,1,waarde);
           fractie= toon % 127;        
           toon= toon / 127;
           vel=cont.ed.random(startgetal,80,100);
           stem=cont.ed.random(startgetal,1,2);
           if (boo1=true)  stem=2;
           if (boo2=true)  stem=1;
           cont.ed.midi_toon(stem,50+toon,fractie,vel);
         }
       }
   
       if (cont.clkpls>=9*i2)  {  //4
         i2=i2+1;
         if (boo3 || boo4)  {
           toon=cont.ed.random(startgetal,1,waarde);
           fractie= toon % 127;
           toon= toon / 127;
           vel=cont.ed.random(startgetal,80,100);
           stem=cont.ed.random(startgetal,3,4);
           if (boo3=true)  stem=4;
           if (boo4=true)  stem=3;
           cont.ed.midi_toon(stem,50+toon,fractie,vel);
         }
       }

       if (cont.clkpls>=tijd3)  {    
          cont.ed.midi_toon(5,20,cont.ed.random(startgetal,0,127),cont.ed.random(startgetal,50,80));
          tijd3 = cont.ed.random(startgetal,10,60)+tijd3;
       }
       
     
       if ((cont.clkpls>=400+tijd2) || (teller==56) || (teller==58))  {
          
         tijd2=cont.ed.random(startgetal,30,600)+tijd2;
         cont.ed.midi_data(algemeen,"fdb",cont.ed.random(startgetal,5,7),5,8);
         if (teller>=58)  { 
           cont.ed.midi_data(algemeen,"fdb",7,5,8);
           cont.ed.midi_data(operator4,"lev",0,5,8);
         }
         toon=cont.ed.random(startgetal,16,17);
        // System.out.println("ransdom 16-7 " + toon);
         fractie=cont.ed.random(startgetal,0,127);
         cont.ed.midi_toon(5,toon,fractie,127);
      
         toon=cont.ed.random(startgetal,17,18);
         fractie=cont.ed.random(startgetal,0,127);
         cont.ed.midi_toon(6,toon,fractie,127);

         toon=cont.ed.random(startgetal,18,19);
         fractie=cont.ed.random(startgetal,0,127);
         cont.ed.midi_toon(7,toon,fractie,127);
       }
    } while (teller<61 && !exit);

    System.out.println(" end of loop " +  (System.currentTimeMillis() - starttime) + " teller " + teller);