diff --git a/debug/sysctl.c b/debug/sysctl.c
new file mode 100644
index 0000000..9a3f143
--- /dev/null
+++ b/debug/sysctl.c
@@ -0,0 +1,89 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <string.h>
+
+int mib[CTL_MAXNAME];
+//int mib[2];
+size_t len;
+char *p;
+
+static int name2oid(const char *name, int *oidp);
+
+int main() {
+  printf("SYSCTL\n");
+
+
+  mib[0] = 1;
+  mib[1] = 1;
+
+  sysctl(mib, 2, NULL, &len, NULL, 0);
+  p = malloc(len);
+  sysctl(mib, 2, p, &len, NULL, 0);
+
+  printf("[%s]\n", p); 
+
+  mib[0] = 1;
+  mib[1] = 10;
+
+  sysctl(mib, 2, NULL, &len, NULL, 0);
+  p = malloc(len);
+  sysctl(mib, 2, p, &len, NULL, 0);
+
+  printf("[%s]\n", p); 
+
+  mib[0] = 1;
+  mib[1] = 2;
+
+  sysctl(mib, 2, NULL, &len, NULL, 0);
+  p = malloc(len);
+  sysctl(mib, 2, p, &len, NULL, 0);
+
+  printf("[%s]\n", p); 
+
+  mib[0] = 1;
+  mib[1] = 4;
+
+  sysctl(mib, 2, NULL, &len, NULL, 0);
+  p = malloc(len);
+  sysctl(mib, 2, p, &len, NULL, 0);
+
+  printf("[%s]\n", p); 
+
+  mib[0] = 6;
+  mib[1] = 1;
+
+  sysctl(mib, 2, NULL, &len, NULL, 0);
+  p = malloc(len);
+  sysctl(mib, 2, p, &len, NULL, 0);
+
+  printf("[%s]\n", p); 
+  
+  size_t j;
+
+  j = name2oid("vm.overcommit", mib);
+
+  printf("j:[%i]\n", j);
+
+  for (int i = 0; i < j; i++)
+    printf("[%i]", mib[i]);
+  printf("\n");
+}
+
+static int name2oid(const char *name, int *oidp)
+{
+        int oid[2];
+        int i;
+        size_t j;
+
+        oid[0] = 0;
+        oid[1] = 3;
+
+        j = CTL_MAXNAME * sizeof(int);
+        i = sysctl(oid, 2, oidp, &j, name, strlen(name));
+        if (i < 0)
+                return (i);
+        j /= sizeof(int);
+        return (j);
+}