increase initialWindowSize and initialConnWindowSize by 2048.

Improves throughput by 5x. Partially addresses #1043.
grpc · Mar 27, 2017 · edd14bc · edd14bc
1 parent 14a6be4
commit edd14bc
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/transport/control.go b/transport/control.go
@@ -44,10 +44,10 @@ import (
 
 const (
 	// The default value of flow control window size in HTTP2 spec.
-	defaultWindowSize = 65535
+	defaultWindowSize = 65536
 	// The initial window size for flow control.
-	initialWindowSize             = defaultWindowSize      // for an RPC
-	initialConnWindowSize         = defaultWindowSize * 16 // for a connection
+	initialWindowSize             = defaultWindowSize * 2048      // for an RPC
+	initialConnWindowSize         = defaultWindowSize * 16 * 2048 // for a connection
 	infinity                      = time.Duration(math.MaxInt64)
 	defaultClientKeepaliveTime    = infinity
 	defaultClientKeepaliveTimeout = time.Duration(20 * time.Second)