diff --git a/script/system/80-tfe.conf b/script/system/80-tfe.conf
new file mode 100644
index 0000000..4f59377
--- /dev/null
+++ b/script/system/80-tfe.conf
@@ -0,0 +1,32 @@
+# read/write buffer
+net.core.rmem_default = 256960
+net.core.rmem_max = 256960
+net.core.wmem_default = 256960
+net.core.wmem_max = 256960
+
+# disable rpfilter
+net.ipv4.conf.all.rp_filter=0
+net.ipv4.conf.default.rp_filter=0
+
+# fs
+fs.file-max=1048560
+net.core.netdev_max_backlog=1000000
+net.core.somaxconn=131072
+
+# tcp options about TIME_WAIT
+net.ipv4.tcp_fin_timeout=10
+net.ipv4.tcp_tw_reuse=1
+net.ipv4.tcp_max_tw_buckets=4096
+net.ipv4.tcp_max_orphans=131072
+net.ipv4.tcp_max_syn_backlog=131072
+
+# bbr
+net.ipv4.tcp_congestion_control=bbr
+
+# tcp feature
+net.ipv4.tcp_ecn=0
+net.ipv4.tcp_sack=1
+net.ipv4.tcp_timestamps=1
+
+# disable tcp windows scaling for kernel bugs
+net.ipv4.tcp_window_scaling=0
\ No newline at end of file
diff --git a/script/user/r2_tfe b/script/user/r2_tfe
new file mode 100644
index 0000000..41a8b4a
--- /dev/null
+++ b/script/user/r2_tfe
@@ -0,0 +1,2 @@
+killall r3_tfe tfe
+./r3_tfe &> /dev/null &
diff --git a/script/user/r3_tfe b/script/user/r3_tfe
new file mode 100644
index 0000000..e330038
--- /dev/null
+++ b/script/user/r3_tfe
@@ -0,0 +1,20 @@
+#!/bin/sh
+
+while [ 1 ]; do
+	count=`ls -l core.* |wc -l`
+        echo $count
+        if [ $count -lt 5 ]
+        then
+                echo "set unlimited"
+                ulimit -c unlimited
+        else
+                ulimit -c 0
+        fi
+
+	export ASAN_OPTIONS=abort_on_error=1:log_path=./asan.log
+
+	ulimit -n 655350
+	./bin/tfe > /dev/null
+	echo program crashed, restart at `date +"%w %Y/%m/%d, %H:%M:%S"` >> RESTART.log
+    sleep 1
+done