diff --git a/cputree.c b/cputree.c
index eb1981e..37c074b 100644
--- a/cputree.c
+++ b/cputree.c
@@ -224,11 +224,13 @@ static struct topo_obj* add_cache_domain_to_package(struct topo_obj *cache,
 		package->obj_type = OBJ_TYPE_PACKAGE;
 		package->obj_type_list = &packages;
 		package->number = packageid;
+		package->max_load = 0;
 		packages = g_list_append(packages, package);
 	}
 
 	entry = g_list_find(package->children, cache);
 	if (!entry) {
+		package->max_load += cache->max_load;
 		package->children = g_list_append(package->children, cache);
 		cache->parent = package;
 	}
@@ -264,12 +266,14 @@ static struct topo_obj* add_cpu_to_cache_domain(struct topo_obj *cpu,
 		cache->mask = cache_mask;
 		cache->number = cache_domain_count;
 		cache->obj_type_list = &cache_domains;
+		cache->max_load = 0;
 		cache_domains = g_list_append(cache_domains, cache);
 		cache_domain_count++;
 	}
 
 	entry = g_list_find(cache->children, cpu);
 	if (!entry) {
+		cache->max_load += cpu->max_load;
 		cache->children = g_list_append(cache->children, cpu);
 		cpu->parent = (struct topo_obj *)cache;
 	}
@@ -317,6 +321,8 @@ static void do_one_cpu(char *path)
 
 	cpu->number = strtoul(&path[27], NULL, 10);
 
+	cpu->max_load = SLEEP_INTERVAL * 1000 * 1000; // SLEEP_INTERVAL in nanoseconds, should be a good enough approximation
+
 	cpu_set(cpu->number, cpu_online_map);
 	
 	cpu_set(cpu->number, cpu->mask);
@@ -398,6 +404,8 @@ static void do_one_cpu(char *path)
 		 * we override package_mask with node mask.
 		 */
 		node = get_numa_node(nodeid);
+		if (node)
+			node->max_load += cpu->max_load;
 		if (node && (cpus_weight(package_mask) > cpus_weight(node->mask)))
 			cpus_and(package_mask, package_mask, node->mask);
 	}
diff --git a/numa.c b/numa.c
index 13d7ebd..c710f98 100644
--- a/numa.c
+++ b/numa.c
@@ -58,9 +58,10 @@ static void add_one_node(int nodeid)
 		process_one_line(path, get_mask_from_bitmap, &new->mask);
 	}
 
-	new->obj_type = OBJ_TYPE_NODE;	
+	new->obj_type = OBJ_TYPE_NODE;
 	new->number = nodeid;
 	new->obj_type_list = &numa_nodes;
+	new->max_load = 0;
 	numa_nodes = g_list_append(numa_nodes, new);
 }
 
diff --git a/placement.c b/placement.c
index 185aa0d..c78673b 100644
--- a/placement.c
+++ b/placement.c
@@ -76,7 +76,7 @@ static void find_best_object_packing(GList *objs, struct irq_info *info, struct
 	entry = g_list_first(objs);
 	while (entry) {
 		struct topo_obj *d = entry->data;
-		if (d->load + info->load < 0.9e9) {
+		if (d->load + info->load < d->max_load) {
 			place->best = d;
 			place->best_cost = d->load + info->load;
 			return;
@@ -120,11 +120,11 @@ static void find_best_object_for_irq(struct irq_info *info, void *data)
 	place.best = NULL;
 	place.best_cost = ULLONG_MAX;
 
-	//if (info->level != BALANCE_CORE) {
-	//	for_each_object(d->children, find_best_object, &place);
-	//} else {
+	if (info->level != BALANCE_CORE) {
+		for_each_object(d->children, find_best_object, &place);
+	} else {
 		find_best_object_packing(d->children, info, &place);
-	//}
+	}
 
 	asign = place.best;
 
diff --git a/types.h b/types.h
index 9693cf4..c26344c 100644
--- a/types.h
+++ b/types.h
@@ -46,6 +46,7 @@ enum obj_type_e {
 struct topo_obj {
 	uint64_t load;
 	uint64_t last_load;
+	uint64_t max_load;
 	uint64_t irq_count;
 	enum obj_type_e obj_type;
 	int number;