diff --git a/src/im_mad/remotes/lib/vcenter_cluster.rb b/src/im_mad/remotes/lib/vcenter_cluster.rb
index 2662ce9d5a..fed91285c8 100644
--- a/src/im_mad/remotes/lib/vcenter_cluster.rb
+++ b/src/im_mad/remotes/lib/vcenter_cluster.rb
@@ -309,30 +309,17 @@ class Cluster
     def cluster_monitoring
         resource_usage_summary = @cluster.item.GetResourceUsage()
 
-        metrics = @cluster.item.collect(*(CLUSTER_PROPERTIES[1]))
-        num_cpu_cores = metrics[0].to_f
+        total_cpu    = resource_usage_summary.cpuCapacityMHz.to_i
+        used_cpu     = resource_usage_summary.cpuUsedMHz.to_i
+        total_memory = resource_usage_summary.memCapacityMB.to_i
+        used_mem     = resource_usage_summary.memUsedMB.to_i
 
-        total_cpu     = resource_usage_summary.cpuCapacityMHz.to_f
-        effective_cpu = resource_usage_summary.cpuUsedMHz.to_f
-        total_memory  = resource_usage_summary.memCapacityMB.to_i
-        effective_mem = resource_usage_summary.memUsedMB.to_i
-
-        if num_cpu_cores > 0
-            mhz_core = total_cpu / num_cpu_cores
-            eff_core = effective_cpu / mhz_core
-        else
-            eff_core = 0
-        end
-
-        free_cpu = (eff_core * 100).to_i
-        used_cpu = (total_cpu - free_cpu).to_i
-
-        total_mem = total_memory / 1024
-        free_mem  = effective_mem * 1024
+        free_cpu  = total_cpu - used_cpu
+        free_mem  = total_memory - used_mem
 
         unindent(<<-EOS)
             HYPERVISOR = vcenter
-            USEDMEMORY = "#{(total_mem - free_mem)}"
+            USEDMEMORY = "#{(used_mem * 1024)}"
             FREEMEMORY = "#{free_mem}"
             USEDCPU    = "#{used_cpu}"
             FREECPU    = "#{free_cpu}"