diff --git a/README.md b/README.md
index daa468b..cffa765 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,9 @@ An OTP application
     目录: /usr/local/code/tmp/gpb
     bin/protoc-erl -I . -rename msg_name:snake_case -strbin sdlan_pb.proto
 
+## 安装erlang的依赖环境 Ubuntu 22
+    apt install gcc g++ linux-headers-generic unixodbc unixodbc-dev libncurses-dev libssl-dev
+
 Build
 -----
 
diff --git a/config/vm.args b/config/vm.args
index 737fd3b..1ba9c4a 100644
--- a/config/vm.args
+++ b/config/vm.args
@@ -2,5 +2,9 @@
 
 -setcookie sdlan_cookie
 
+-mnesia dir '"/usr/local/var/mnesia/sdlan"'
+-mnesia dump_log_write_threshold 5000
+-mnesia dc_dump_limit 40
+
 +K true
 +A30