From 3792683cc6b0a58710f6359520542b24c6af1ea3 Mon Sep 17 00:00:00 2001
From: Joseph Henry <josephjah@gmail.com>
Date: Thu, 7 Mar 2019 10:59:50 -0800
Subject: [PATCH] Set _incomingPacketConcurrency to 1

---
 src/Service.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Service.cpp b/src/Service.cpp
index 1b96c1d..9908c3a 100644
--- a/src/Service.cpp
+++ b/src/Service.cpp
@@ -272,7 +272,11 @@ public:
 		_ports[1] = 0;
 		_ports[2] = 0;
 
-		_incomingPacketConcurrency = std::max((unsigned long)1,std::min((unsigned long)16,(unsigned long)std::thread::hardware_concurrency()));
+		/* Packet input concurrency is disabled intentially since it
+		would force the user-space network stack to constantly re-order
+		frames, resulting in lower RX performance */
+		_incomingPacketConcurrency = 1;
+		// std::max((unsigned long)1,std::min((unsigned long)16,(unsigned long)std::thread::hardware_concurrency()));
 		char *envPool = std::getenv("INCOMING_PACKET_CONCURRENCY");
 		if (envPool != NULL) {
 			int tmp = atoi(envPool);