--- a/probes/cpuacct.c	Thu Dec 30 19:01:47 2010 +0100
+++ b/probes/cpuacct.c	Fri Dec 31 20:04:25 2010 +0100
@@ -6,10 +6,20 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "lxcstats.h"
 #include "_lxcstats.h"
 
+static inline uint32_t
+nsecs_to_user_hz(uint64_t counter)
+{
+    /*
+     * XXX I don't know if it will work for custom values of HZ in the kernel.
+     */
+    return (counter / (NSEC_PER_SEC / sysconf(_SC_CLK_TCK)));
+}
+
 static int
 read_stat(struct lxcst *c)
 {
@@ -61,7 +71,7 @@
             errno = 0;
             p = values;
             for (i = 0; i != ncpus && *p; ++i) {
-                c->cpuacct.percpu[i] = strtoll(p, &p, 10);
+                c->cpuacct.percpu[i] = nsecs_to_user_hz(strtoll(p, &p, 10));
                 if (errno)
                     goto err;
                 p += strcspn(p, "0123456789");