From 26cc1427e93e5f65a5a1a07edd275fdf713e7309 Mon Sep 17 00:00:00 2001
From: Jan Tattermusch <jtattermusch@google.com>
Date: Wed, 4 May 2016 17:21:17 -0700
Subject: [PATCH] start server with more than one allowed RPCs

---
 src/csharp/Grpc.Core/Server.cs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/csharp/Grpc.Core/Server.cs b/src/csharp/Grpc.Core/Server.cs
index 9b0895d8554..fea76d557ad 100644
--- a/src/csharp/Grpc.Core/Server.cs
+++ b/src/csharp/Grpc.Core/Server.cs
@@ -48,6 +48,7 @@ namespace Grpc.Core
     /// </summary>
     public class Server
     {
+        const int InitialAllowRpcTokenCount = 10;
         static readonly ILogger Logger = GrpcEnvironment.Logger.ForType<Server>();
 
         readonly AtomicCounter activeCallCounter = new AtomicCounter();
@@ -129,7 +130,13 @@ namespace Grpc.Core
                 startRequested = true;
                 
                 handle.Start();
-                AllowOneRpc();
+
+                // Starting with more than one AllowOneRpc tokens can significantly increase
+                // unary RPC throughput.
+                for (int i = 0; i < InitialAllowRpcTokenCount; i++)
+                {
+                    AllowOneRpc();
+                }
             }
         }