diff --git a/essai.c b/essai.c
index 2697382..46b2fb7 100644
--- a/essai.c
+++ b/essai.c
@@ -37,7 +37,9 @@ return 0;
 /* --------------------------------------------------------------- */
 static void finish(int signal)
 {
-endwin();       exit(0);
+endwin();       
+fprintf(stderr, "end of pid %d\n", getpid());
+exit(0);
 }
 /* --------------------------------------------------------------- */
 
diff --git a/serial/essai.sh b/serial/essai.sh
index 4b2d194..e0014fc 100755
--- a/serial/essai.sh
+++ b/serial/essai.sh
@@ -5,9 +5,9 @@ DATAFILE="foo.dat"
 TMPFILE="/tmp/dd2data"
 
 IMAGE="graphe.png"
-NB_READ=9500
+NB_READ=5000
 
-./t -vv -n ${NB_READ} -d ${DEVICE} | tee -a ${DATAFILE}
+./t -v -n ${NB_READ} -d ${DEVICE} | tee -a ${DATAFILE}
 
 gnuplot << __EOC__
 set term png 	size 3200,512