tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3#
4# Test latency spikes caused by FIN/ACK handling race.
5
6set +x
7set -e
8
9tmpfile=$(mktemp /tmp/fin_ack_latency.XXXX.log)
10
11cleanup() {
12 kill $(pidof fin_ack_lat)
13 rm -f $tmpfile
14}
15
16trap cleanup EXIT
17
18do_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
34do_test "30"
35echo "test done"