diff --git a/sources/cmd/server-dummy.go b/sources/cmd/server-dummy.go
index 4e52afd..1cb8d8f 100644
--- a/sources/cmd/server-dummy.go
+++ b/sources/cmd/server-dummy.go
@@ -36,7 +36,7 @@ func main () () {
 			NoDefaultDate : true,
 			DisableHeaderNamesNormalizing : true,
 			
-			Concurrency : 4 * 1024 + 128,
+			Concurrency : 16 * 1024 + 128,
 			MaxRequestsPerConn : 256 * 1024,
 			
 			ReadBufferSize : 16 * 1024,
diff --git a/sources/cmd/server.go b/sources/cmd/server.go
index 7309262..451189f 100644
--- a/sources/cmd/server.go
+++ b/sources/cmd/server.go
@@ -1004,7 +1004,7 @@ func main_0 () (error) {
 			NoDefaultDate : true,
 			DisableHeaderNamesNormalizing : true,
 			
-			Concurrency : 4 * 1024 + 128,
+			Concurrency : 16 * 1024 + 128,
 			MaxRequestsPerConn : 256 * 1024,
 			
 			ReadBufferSize : 16 * 1024,