Help CPU usage at 8.9% ?

[Rasoul Hajikhani <rhajikhani exchange office etoys com>]

I have this piece of code that when run, has a 9.0% cpu usage
 GtkWidget create_bars (void)
     71 {
     72         GtkWidget *lh, *table;
     73         int i, count, count1;
     74 
     75         char buffer[20];
     76 
     77         table = gtk_table_new(_TWO, _TWTYTWO, FALSE);
     78 
     79         vrule = gtk_vruler_new();
     80         gtk_ruler_set_metric( GTK_RULER(vrule), GTK_PIXELS );
     81         gtk_ruler_set_range( GTK_RULER(vrule), _TWOH, _NON, _NON,
_TWOH);
     82         gtk_table_attach_defaults( GTK_TABLE(table),
     83                                    vrule,
     84                                    _NON,
     85                                    _NON,
     86                                    _ONE);
     87         gtk_table_set_col_spacings( GTK_TABLE (table),
     88                                      _FIVE);
     89 
     90         for (i = _NON; i < _TWTY; i++)
     91         {
     92                 count1 = count = i;
     93                 count++;
     94                 count1++;
     95 
     96                 lh = gtk_level_hold_new(_TWOH,
     97                                          _TEN,
     98                                          GTK_LEVEL_HOLD_FADE,
     99                                          _EIGHT,
    100                                          _THREE,
    101                                          _TWO);
    102 
    103                 gtk_box_pack_start(GTK_BOX(table), lh, _NON, _NON,
_NON);
    104                 gtk_table_attach_defaults( GTK_TABLE(table),
    105                                            lh,
    106                                            count,
    107                                            count + _ONE,
    108                                            _NON,
    109                                            _ONE);
    110 
    111                 sprintf(buffer, "Label%d", i);
    112 
    113                 label = gtk_label_new (buffer);

			gtk_table_attach_defaults( GTK_TABLE(table),
    115                                            label,
    116                                            count1,
    117                                            count1 + _ONE,
    118                                            _ONE,
    119                                            _TWO);
    120 
    121                 gtk_timeout_add(100, bar, lh);
    122         }
    123 
    124         return table;
    125 
    126 }
I really do not understand why such high cpu usage. On top of that, when I
put this in my application which has a whole lot of other things, the cpu
usage goes to 20%. However, my application without the above code, has
less that 1% cpu usage. Can any one PLEASE help...
-r