diff --git a/bin/generationlib b/bin/generationlib
index 742cb8d..caf57fe 100755
--- a/bin/generationlib
+++ b/bin/generationlib
@@ -10,6 +10,7 @@ Usage: `basename $0` [-h] [-i] [-j nb_jobs] command arg_list
     -c      give the path to the cfg file
     -i      give the path of the svg files without the last /
     -k      chek if the jpg already exist
+    -s      set the sleeptime while there are too many simultanious jobs
     -j      Set number of simultanious jobs. Default is 2
     -o      directory where the files should be moved to after creation.
             Default ist PICCREATE_OUT
@@ -17,32 +18,6 @@ Usage: `basename $0` [-h] [-i] [-j nb_jobs] command arg_list
     `basename $0` -i file -c config 
     `basename $0` -j 3 -i file -c config"
  
-function queue {
-    QUEUE="$QUEUE $1"
-    NUM=$(($NUM+1))
-}
-function regeneratequeue {
-    OLDREQUEUE=$QUEUE
-    QUEUE=""
-    NUM=0
-    for PID in $OLDREQUEUE
-    do
-        if [ -d /proc/$PID  ] ; then
-            QUEUE="$QUEUE $PID"
-            NUM=$(($NUM+1))
-        fi
-    done
-}
-function checkqueue {
-    OLDCHQUEUE=$QUEUE
-    for PID in $OLDCHQUEUE
-    do
-        if [ ! -d /proc/$PID ] ; then
-            regeneratequeue # at least one PID has finished
-            break
-        fi
-    done
-}
 function cfg_parser {
     INI_FILE=$1
     SECTION=$2
@@ -112,8 +87,9 @@ if [ $# -eq 0 ]; then #  must be at least one arg
 fi
 
 CHECKFILE=0
+SLEEPTIME=0.5
 
-while getopts "j:i:kc:o:hc:" OPT; do # "j:" waits for an argument "h" doesnt
+while getopts "j:i:kc:s:o:hc:" OPT; do # "j:" waits for an argument "h" doesnt
     case $OPT in
     h)  echo "$USAGE"
         exit 0 ;;
@@ -121,6 +97,7 @@ while getopts "j:i:kc:o:hc:" OPT; do # "j:" waits for an argument "h" doesnt
     k)  CHECKFILE=1 ;;
     c)  CFG_FILENAME=$OPTARG ;;
     o)  OUTDIR=$OPTARG ;;
+    s)  SLEEPTIME=$OPTARG ;;
     i)  INPUT_FILENAME=$OPTARG ;;
     *) echo "$USAGE" >&2; exit 1;   # Default.
     esac
@@ -147,12 +124,9 @@ do
             CMDLINE="$CMD $SWITCHES"
             (echo $ID; $CMDLINE) &
  
-            PID=$!
-            queue $PID
  
-            while [ $NUM -ge $MAX_NPROC ]; do
-                checkqueue
-                sleep 0.5
+            while [ `ps -clx|grep -w 'convert' |wc -l` -ge $MAX_NPROC ]; do
+                sleep $SLEEPTIME
             done
     fi
 done