diff --git a/src/oca/ruby/opennebula/host_pool.rb b/src/oca/ruby/opennebula/host_pool.rb
index 8cf44c28ed..907ee92d3b 100644
--- a/src/oca/ruby/opennebula/host_pool.rb
+++ b/src/oca/ruby/opennebula/host_pool.rb
@@ -99,8 +99,8 @@ module OpenNebula
 
         # Retrieves the monitoring data for all the Hosts in the pool, in XML
         #
-        # @param [Integer] num Optional number of monitoring records to be
-        #   retrieved. If nill all records are retrieved
+        # @param [Integer] num Optional Retrieve monitor records in the last num
+        #   seconds. 0 just the last record, -1 or nil all records
         #
         # @return [String] VM monitoring data, in XML
         def monitoring_xml(num = nil)
diff --git a/src/oca/ruby/opennebula/virtual_machine_pool.rb b/src/oca/ruby/opennebula/virtual_machine_pool.rb
index c09bd66c66..8c7c6b0acc 100644
--- a/src/oca/ruby/opennebula/virtual_machine_pool.rb
+++ b/src/oca/ruby/opennebula/virtual_machine_pool.rb
@@ -199,8 +199,8 @@ module OpenNebula
         #
         # @param [Integer] filter_flag Optional filter flag to retrieve all or
         #   part of the Pool. Possible values: INFO_ALL, INFO_GROUP, INFO_MINE.
-        # @param [Integer] num Optional number of monitoring records to be
-        #   retrieved. If nill all records are retrieved
+        # @param [Integer] num Optional Retrieve monitor records in the last num
+        #   seconds. 0 just the last record, -1 or nil all records
         # @return [String] VM monitoring data, in XML
         def monitoring_xml(filter_flag=INFO_ALL, num=nil)
             return @client.call(VM_POOL_METHODS[:monitoring], filter_flag) if num.nil?
diff --git a/src/rm/RequestManagerPoolInfoFilter.cc b/src/rm/RequestManagerPoolInfoFilter.cc
index 0b9f5b590a..736fbc364b 100644
--- a/src/rm/RequestManagerPoolInfoFilter.cc
+++ b/src/rm/RequestManagerPoolInfoFilter.cc
@@ -512,19 +512,27 @@ void VirtualMachinePoolMonitoring::request_execute(
     if (paramList.size() > 2)
     {
         ostringstream oss;
-        int num_rows = xmlrpc_c::value_int(paramList.getInt(2));
+        int s = xmlrpc_c::value_int(paramList.getInt(2));
 
-        oss << one_db::vm_monitor_table << ".last_poll in "
-            << "(select last_poll from " << one_db::vm_monitor_table << " as t "
-            << "where t.vmid = " << one_db::vm_monitor_table << ".vmid "
-            << "ORDER by last_poll DESC";
-
-        if (num_rows != -1)
+        switch (s)
         {
-            oss << " LIMIT " << num_rows << ")";
-        }
+            case 0: //Get last monitor value
+                oss << one_db::vm_monitor_table << ".last_poll = "
+                    <<  "(SELECT MAX(last_poll) FROM " << one_db::vm_monitor_table
+                    << " AS t WHERE t.vmid = " << one_db::vm_monitor_table << ".vmid)";
 
-        and_clause = oss.str();
+                and_clause = oss.str();
+                break;
+
+            case -1: //Get all monitoring
+                and_clause = "";
+                break;
+
+            default: //Get monitor in last s seconds
+                oss << one_db::vm_monitor_table << ".last_poll > " << time(nullptr) - s;
+                and_clause = oss.str();
+                break;
+        }
     }
 
     where_filter(att, filter_flag, -1, -1, and_clause, "", false, false, false, where);
@@ -718,17 +726,26 @@ void HostPoolMonitoring::request_execute(
     if (paramList.size() > 1)
     {
         ostringstream oss;
-        int num_rows = xmlrpc_c::value_int(paramList.getInt(1));
+        int s = xmlrpc_c::value_int(paramList.getInt(1));
 
-        oss << one_db::host_monitor_table << ".last_mon_time in "
-            << "(select last_mon_time "
-            << "from " << one_db::host_monitor_table << " as t "
-            << "where t.hid = " << one_db::host_monitor_table << ".hid "
-            << "ORDER by last_mon_time DESC";
-
-        if (num_rows != -1)
+        switch (s)
         {
-            oss << " LIMIT " << num_rows << ")";
+            case 0: //Get last monitor value
+                oss << one_db::host_monitor_table << ".last_mon_time = "
+                    <<  "(SELECT MAX(last_mon_time) FROM " << one_db::host_monitor_table
+                    << " AS t WHERE t.hid = " << one_db::host_monitor_table << ".hid)";
+
+                and_clause = oss.str();
+                break;
+
+            case -1: //Get all monitoring
+                and_clause = "";
+                break;
+
+            default: //Get monitor in last s seconds
+                oss << one_db::host_monitor_table << ".last_mon_time > " << time(nullptr) - s;
+                and_clause = oss.str();
+                break;
         }
 
         and_clause = oss.str();
diff --git a/src/scheduler/include/MonitorXML.h b/src/scheduler/include/MonitorXML.h
index cfa7451420..c98ce20ec3 100644
--- a/src/scheduler/include/MonitorXML.h
+++ b/src/scheduler/include/MonitorXML.h
@@ -94,7 +94,7 @@ protected:
     {
         try
         {
-            client->call("one.hostpool.monitoring", "i", &result, 1);
+            client->call("one.hostpool.monitoring", "i", &result, 0);
 
             return 0;
         }