Update linux.conf

plugins/sys-opt/tpl/linux.conf

@@ -34,6 +34,12 @@ net.ipv4.tcp_fin_timeout = 1
 net.ipv4.tcp_keepalive_time = 30
 net.ipv4.ip_local_port_range = 1024 65001
 
+
+# vm opt
+vm.dirty_ratio = 40
+vm.dirty_background_ratio = 10
+vm.swappiness = 10
+vm.vfs_cache_pressure = 500
 vm.overcommit_memory=1
 vm.max_map_count = 262144