From 7ad7baf23da3404ca755379b11a2da2fe453e513 Mon Sep 17 00:00:00 2001
From: Ken Chen <cken@google.com>
Date: Thu, 13 Apr 2023 16:21:01 +0800
Subject: [PATCH] Increases socket buffer for 5G FR2 throughput

The existing socket buffer size is unable to sustain 4.2Gbits/s. Enlarge
buffer size based on LAB test result.

Bug: 274709266
Test: $ iperf3 -u -c 10.174.105.148 -i1 -b450M -P10 -t60 -p 5029 --bidir
      DL: 4.17 Gbits/sec
      UL: 310 Mbits/sec
Change-Id: I6c892eb7b8cf3ab6b7ecd620e1e52211e5d550bd
---
 conf/init.zuma.rc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/conf/init.zuma.rc b/conf/init.zuma.rc
index 6c3e2aea..75f54427 100644
--- a/conf/init.zuma.rc
+++ b/conf/init.zuma.rc
@@ -119,7 +119,7 @@ on init
     symlink /data/app /factory
 
     # Apply network parameters for high data performance.
-    write /proc/sys/net/core/rmem_default 327680
+    write /proc/sys/net/core/rmem_default 1310720
     write /proc/sys/net/core/rmem_max 8388608
     write /proc/sys/net/core/wmem_default 327680
     write /proc/sys/net/core/wmem_max 8388608