Index: machine.c
===================================================================
--- machine.c	(revision 266123)
+++ machine.c	(working copy)
@@ -650,6 +650,21 @@
 }
 
 /*
+ * Return true if this process has used any CPU time since the
+ * previous update.
+ */
+static int
+proc_used_cpu(struct kinfo_proc *pp)
+{
+	const struct kinfo_proc *oldp;
+
+	oldp = get_old_proc(pp);
+	if (oldp == NULL)
+		return (pp->ki_runtime != 0);
+	return (pp->ki_runtime != oldp->ki_runtime);
+}
+
+/*
  * Return the total number of block in/out and faults by a process.
  */
 long
@@ -765,7 +780,7 @@
 			continue;
 		    
 		if (displaymode == DISP_CPU && !show_idle &&
-		    (pp->ki_pctcpu == 0 ||
+		    (!proc_used_cpu(pp) ||
 		     pp->ki_stat == SSTOP || pp->ki_stat == SIDL))
 			/* skip idle or non-running processes */
 			continue;