Add TODO for false-sharing

connect/proxy/conn.go

@@ -9,6 +9,9 @@ import (
 // Conn represents a single proxied TCP connection.
 type Conn struct {
 	src, dst net.Conn
+	// TODO(banks): benchmark and consider adding _ [8]uint64 padding between
+	// these to prevent false sharing between the rx and tx goroutines when
+	// running on separate cores.
 	srcW, dstW countWriter
 	stopping   int32
 }