diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index fb201bb..0000000
--- a/.gitmodules
+++ /dev/null
@@ -1,3 +0,0 @@
-[submodule "papihighlevel"]
-	path = papihighlevel
-	url = ../papihighlevel.git
diff --git a/jikes_write_barrier/Makefile b/jikes_write_barrier/Makefile
index a08b6a8..d27149f 100644
--- a/jikes_write_barrier/Makefile
+++ b/jikes_write_barrier/Makefile
@@ -4,27 +4,19 @@ INCDIR=include
 LIBDIR=lib
 SRCDIR=src
 BINDIR=bin
-PAPILIBDIR=lib
-PAPIINCDIR=include
-LOCALDIR=$(HOME)/local
+SCRIPTDIR=scripts
 
-default: barrier
+SRCS := $(shell find $(SRCDIR) -name \*.java | sed -r "s@^\./@@")
+BINS=$(patsubst $(SRCDIR)/%.java,$(BINDIR)/%.class,$(SRCS))
 
-# TODO: Verify libpapihighlevel.so is uptodate (need a git module)
-runbarrier: $(BINDIR)/lip6/jikesrvm/bench/Main.class $(BINDIR)/lip6/jikesrvm/bench/Cell.class
-	LD_LIBRARY_PATH=$(LOCALDIR)/$(LIBDIR) \
-		rvm -cp $(BINDIR):$(LOCALDIR)/$(LIBDIR) \
-		-Djava.library.path=$(LOCALDIR)/$(LIBDIR) \
-		-Xms2G -Xmx3G -X:processors=1 lip6.jikesrvm.bench.Main
+default: $(BINS)
 
-# TODO: Verify libpapihighlevel.so is uptodate (need a git module)
-barrier: $(BINDIR)/lip6/jikesrvm/bench/Main.class
+runbarrier: $(BINDIR)/lip6/jikesrvm/bench/Main.class
+	$(SCRIPTDIR)/launch_java_bench $(BINDIR) $<
 
-$(BINDIR)/lip6/jikesrvm/bench/Main.class: $(SRCDIR)/lip6/jikesrvm/bench/Main.java \
-		$(SRCDIR)/lip6/jikesrvm/bench/Cell.java
-	if [ ! -d $(BINDIR) ] ; then mkdir $(BINDIR) ; fi
-	javac -d $(BINDIR) -sourcepath $(SRCDIR) -classpath $(LOCALDIR)/$(PAPILIBDIR) \
-		$(SRCDIR)/lip6/jikesrvm/bench/Main.java
+$(BINDIR)/%.class: $(SRCDIR)/%.java
+	mkdir -p $(BINDIR)
+	javac -d $(BINDIR) -sourcepath $(SRCDIR) $<
 
 clean:
 
diff --git a/jikes_write_barrier/scripts/launch_java_bench b/jikes_write_barrier/scripts/launch_java_bench
new file mode 100755
index 0000000..ef9e4b8
--- /dev/null
+++ b/jikes_write_barrier/scripts/launch_java_bench
@@ -0,0 +1,22 @@
+#!/bin/sh
+# First argument: classpath
+# Second argument: class file containing main
+
+classPath="${1%/}"
+bin="${2#${classPath}/}"
+bin=$(echo ${bin} | sed -r "s@\.class\$@@;s@/@.@g")
+
+perf stat -r 10 -e cpu-cycles -e L1-dcache-loads -e L1-dcache-stores \
+	-e L1-dcache-prefetches -e L1-dcache-load-misses \
+	-e L1-dcache-prefetch-misses \
+	rvm -cp ${classPath} -Xms2G -Xmx3G -X:processors=1 \
+	${bin} 2>&1 # | grep -E "[[:digit:]]  (cycles|L1-dcache-loads|L1-dcache-prefetches|L1-dcache-load-misses|L1-dcache-prefetch-misses)"
+
+#echo "*** Micro benchmark results ***\n"
+#echo "Number of loop: ${nbLoop}"
+#echo "Number of writes per loop: ${writesPerLoop}"
+
+#echo "L1 data cache hits (total / per loop / per write): ${} / ${} / ${}"
+#echo "L1 data cache misses (total / per loop / per write): ${} / ${} / ${}"
+#echo "Total cycles (total / per loop / per write): ${} / ${} / ${}"
+#echo "----------------------------------------"
diff --git a/jikes_write_barrier/src/lip6/jikesrvm/bench/Main.java b/jikes_write_barrier/src/lip6/jikesrvm/bench/Main.java
index 1f0d7e1..8bfd855 100644
--- a/jikes_write_barrier/src/lip6/jikesrvm/bench/Main.java
+++ b/jikes_write_barrier/src/lip6/jikesrvm/bench/Main.java
@@ -2,7 +2,6 @@ package lip6.jikesrvm.bench;
 
 import java.util.Random;
 import lip6.jikesrvm.bench.Cell;
-import lip6.microbenchs.PapiHighLevel;
 
 public class Main
 {
@@ -10,11 +9,6 @@ public class Main
 	private static Random randomInt; // random int to put into the cells
 	private static Cell head;
 
-	static
-	{
-		System.loadLibrary("papihighlevel");
-	}
-
 	public static void main(String args[])
 	{
 		randomInt = new Random(424242424242L);
@@ -36,20 +30,10 @@ public class Main
 			newCell.setNext(head);
 			head.setPrev(newCell);
 		}
-		if (PapiHighLevel.initialize_papi() != 0)
-		{
-			System.err.println("Error while inizializing PAPI");
-			java.lang.System.exit(1);
-			return;
-		}
 		bubbleSort();
 		/* Only the 6 store in the if of the bubbleSort call the write barrier */
-		if (PapiHighLevel.print_results(6, NB_ELEM) != 0)
-		{
-			System.err.println("Error while getting results");
-			java.lang.System.exit(2);
-			return;
-		}
+		System.out.println("Number of loop: "+ NB_ELEM);
+		System.out.println("Number of writes per loop: 6");
 	}
 
 	private static void bubbleSort()
diff --git a/papihighlevel b/papihighlevel
deleted file mode 160000
index 16449c5..0000000
--- a/papihighlevel
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 16449c571f7363d0a6dc8293df8f0aaec40b492a