Add numa_faults.stp example.

1 files changed, 38 insertions, 0 deletions

diff --git a/testsuite/systemtap.examples/memory/numa_faults.stp b/testsuite/systemtap.examples/memory/numa_faults.stp
new file mode 100755
index 00000000..34a0ace7
--- /dev/null
+++ b/testsuite/systemtap.examples/memory/numa_faults.stp
@@ -0,0 +1,38 @@
+#! /usr/bin/env stap
+
+global execnames, page_faults, node_faults, nodes
+
+probe vm.pagefault {
+  p = pid(); n=addr_to_node(address)
+  execnames[p] = execname()
+  page_faults[p, write_access ? 1 : 0] <<< 1
+  node_faults[p, n] <<< 1
+  nodes[n] <<< 1
+}
+
+function print_pf () {
+  printf ("\n")
+  printf ("%-16s %-6s %10s %10s %-20s\n",
+          "Execname", "PID", "RD Faults", "WR Faults", "Node:Faults")
+  print ("======================= ========== ========== =============\n")
+  foreach (pid in execnames) {
+    printf ("%-16s %6d %10d %10d ", execnames[pid], pid,
+            @count(page_faults[pid,0]), @count(page_faults[pid,1]))
+    foreach ([node+] in nodes) {
+      if ([pid, node] in node_faults)
+        printf ("%d:%d ", node, @count(node_faults[pid, node]))
+    }
+    printf ("\n")
+  }
+  printf("\n")
+}
+
+probe begin {
+ printf("Starting pagefault counters \n")
+}
+
+probe end {
+ printf("Printing counters: \n")
+ print_pf ()
+ printf("Done\n")
+}