Characterize the fastest MPOD update time

mpod.hpp

@@ -9,6 +9,15 @@ using SNMP::VarBind;
 using SNMP::VarBindList;
 
 
+// In ms., the time it takes for an MPOD to process a query, and update its status.
+// While the MPOD will acknowledge more or less immediately, (in the next snmp update loop),
+// its information may be stale.
+// It is preferable to set a channel, ignore the reply, wait a bit, and poll the channel.
+//
+// The fastest a channel can be updated is about 375ms, round up to 400ms.
+#define MPOD_UPDATE_LATENCY 400
+
+
 class MPOD {
     public:
         // Simple helper class to handle OIDs