diff --git a/omr-tracker/files/etc/init.d/omr-tracker b/omr-tracker/files/etc/init.d/omr-tracker
index 141b2f215..6a421a42c 100755
--- a/omr-tracker/files/etc/init.d/omr-tracker
+++ b/omr-tracker/files/etc/init.d/omr-tracker
@@ -60,6 +60,7 @@ _launch_tracker() {
 	procd_append_param env "OMR_TRACKER_DEVICE=$ifname"
 	procd_append_param env "OMR_TRACKER_DEVICE_GATEWAY=$gateway"
 	procd_append_param env "OMR_TRACKER_TYPE=$type"
+	procd_set_param limits nofile="51200 51200"
 	procd_set_param respawn 0 10 0
 	procd_set_param stderr 1
 	procd_close_instance
diff --git a/shadowsocks-libev/files/shadowsocks.conf b/shadowsocks-libev/files/shadowsocks.conf
index b2c4d8e39..8b8f6f6e3 100644
--- a/shadowsocks-libev/files/shadowsocks.conf
+++ b/shadowsocks-libev/files/shadowsocks.conf
@@ -1,6 +1,6 @@
 # local sysctl settings can be stored in this directory
 # max open files
-fs.file-max = 51200
+fs.file-max = 512000
 # max read buffer
 net.core.rmem_max = 134217728
 # max write buffer