From 5418f318f931435d091ca6bcf85d1764e1fd5c50 Mon Sep 17 00:00:00 2001
From: fajiao <1519100073@qq.com>
Date: Tue, 17 May 2022 17:51:24 +0800
Subject: [PATCH] =?UTF-8?q?update=20=E6=A8=AA=E7=90=B4=E9=83=A8=E7=BD=B2?=
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---
 StreamMedia/横琴部署/横琴部署.md | 37 ++++++++++++++++++++++--
 1 file changed, 35 insertions(+), 2 deletions(-)

diff --git a/StreamMedia/横琴部署/横琴部署.md b/StreamMedia/横琴部署/横琴部署.md
index 8846022..bf8bc7f 100644
--- a/StreamMedia/横琴部署/横琴部署.md
+++ b/StreamMedia/横琴部署/横琴部署.md
@@ -51,10 +51,11 @@ cat /proc/sys/net/core/wmem_max
 ## 212992(208KB)
 ## 从 208KB 调整至 1MB
 ## 临时修改
+su
 echo 1048576 > /proc/sys/net/core/rmem_max
 echo 1048576 > /proc/sys/net/core/wmem_max
 ## 永久修改
-vim /etc/sysctl.conf
+sudo vim /etc/sysctl.conf
 net.core.rmem_max = 1048576
 net.core.wmem_max = 1048576
 
@@ -63,9 +64,41 @@ net.core.wmem_max = 1048576
 ulimit -a
 ulimit -n 65536
 ## 永久修改
-vim /etc/security/limits.conf
+sudo vim /etc/security/limits.conf
 * soft nofile 32768
 * hard nofile 65536
 reboot
 ulimit -a
 ```
+
+## 修改 ffmpeg 参数（需要重新编译）
+```
+# 修改 udp.c 内的 UDP_MAX_PKT_SIZE 大小x10
+#define UDP_MAX_PKT_SIZE (65536 * 10)
+```
+
+# 调试工具
+```
+# 安装调试工具
+sudo apt install -y linux-tools-common htop iftop
+sudo add-apt-repository ppa:wireshark-dev/stable
+sudo apt update
+sudo apt install wireshark
+
+# 查看系统信息
+top or htop
+
+# 查看网络连接
+netstat -tunlp
+
+# 查看带宽
+iftop
+
+# 查看 udp 丢包
+cat /proc/net/snmp | grep -w Udp
+
+# 网络抓包
+tcpdump #https://blog.csdn.net/weixin_36338224/article/details/107035214
+wireshark
+```
+