update profiling code to decay instead of clearing all stats

llarp/profiling.cpp

@@ -46,24 +46,24 @@ namespace llarp
   }
 
   void
-  RouterProfile::Clear()
+  RouterProfile::Decay()
   {
-    connectGoodCount    = 0;
-    connectTimeoutCount = 0;
-    pathSuccessCount    = 0;
-    pathFailCount       = 0;
-    lastUpdated         = llarp::time_now_ms();
+    connectGoodCount /= 2;
+    connectTimeoutCount /= 2;
+    pathSuccessCount /= 2;
+    pathFailCount /= 2;
+    lastUpdated = llarp::time_now_ms();
   }
 
   void
   RouterProfile::Tick()
   {
-    // 10 minutes
-    static constexpr llarp_time_t updateInterval = DEFAULT_PATH_LIFETIME;
+    // 20 minutes
+    static constexpr llarp_time_t updateInterval = DEFAULT_PATH_LIFETIME * 2;
     auto now                                     = llarp::time_now_ms();
     if(lastUpdated < now && now - lastUpdated > updateInterval)
     {
-      Clear();
+      Decay();
     }
   }
 

llarp/profiling.hpp

@@ -32,9 +32,9 @@ namespace llarp
     bool
     IsGood(uint64_t chances) const;
 
-    /// clear stats
+    /// decay stats
     void
-    Clear();
+    Decay();
 
     // rotate stats if timeout reached
     void