--- gnome-system-monitor-3.8.2.1/src/procproperties.cpp.original	2014-02-08 21:09:08.000000000 +0000
+++ gnome-system-monitor-3.8.2.1/src/procproperties.cpp	2014-02-08 21:12:12.000000000 +0000
@@ -125,6 +125,12 @@
     else
         HZ = (cinf.stathz ? cinf.stathz : cinf.hz);
 #endif
+#ifdef __GNU__
+    int HZ;
+    HZ = sysconf(_SC_CLK_TCK);
+    if (HZ < 0)
+        HZ = 100;
+#endif
     proc_arg proc_props[] = {
         { N_("Process Name"), g_strdup_printf("%s", info->name)},
         { N_("User"), g_strdup_printf("%s (%d)", info->user.c_str(), info->uid)},
