1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3 #
4 # Test latency spikes caused by FIN/ACK handling race.
5
6 set +x
7 set -e
8
9 tmpfile=$(mktemp /tmp/fin_ack_latency.XXXX.log)
10
11 cleanup() {
12 kill $(pidof fin_ack_lat)
13 rm -f $tmpfile
14 }
15
16 trap cleanup EXIT
17
18 do_test() {
19 RUNTIME=$1
20
21 ./fin_ack_lat | tee $tmpfile &
22 PID=$!
23
24 sleep $RUNTIME
25 NR_SPIKES=$(wc -l $tmpfile | awk '{print $1}')
26 if [ $NR_SPIKES -gt 0 ]
27 then
28 echo "FAIL: $NR_SPIKES spikes detected"
29 return 1
30 fi
31 return 0
32 }
33
34 do_test "30"
35 echo "test done"
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.