reduce TLB noise with SLUBstick

code/timing.c

@@ -0,0 +1,23 @@
+#include <stdlib.h>
+
+inline size_t
+rdtsc_begin(void)
+{
+	size_t a, d;
+	asm volatile("mfence");
+	asm volatile("rdtsc" : "=a"(a), "=d"(d));
+	a = (d << 32) | a;
+	asm volatile("lfence");
+	return a;
+}
+
+inline size_t
+rdtsc_end(void)
+{
+	size_t a, d;
+	asm volatile("lfence");
+	asm volatile("rdtsc" : "=a"(a), "=d"(d));
+	a = (d << 32) | a;
+	asm volatile("mfence");
+	return a;
+}