adaptive sleep for ClientCusror::yield SERVER-975

2010-04-06 13:49:51 -04:00
parent 0c9d1b4284
commit 009e2e4e0a
4 changed files with 24 additions and 0 deletions
--- a/db/client.cpp
+++ b/db/client.cpp
@@ -275,4 +275,21 @@ namespace mongo {

    } handshakeCmd;

+
+    int Client::recommendedYieldMicros(){
+        int num = 0;
+        {
+            scoped_lock bl(clientsMutex);
+            num = clients.size();
+        }
+        
+        if ( --num <= 0 ) // -- is for myself
+            return 0;
+        
+        if ( num > 50 )
+            num = 50;
+
+        num *= 100;
+        return num;
+    }
 }