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Server : LiteSpeed System : Linux srv526460274 5.15.0-164-generic #174-Ubuntu SMP Fri Nov 14 20:25:16 UTC 2025 x86_64 User : kerao9884 ( 1082) PHP Version : 8.0.30 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory : /usr/src/linux-headers-5.15.0-125/tools/testing/selftests/net/ |
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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Test latency spikes caused by FIN/ACK handling race.
set +x
set -e
tmpfile=$(mktemp /tmp/fin_ack_latency.XXXX.log)
cleanup() {
kill $(pidof fin_ack_lat)
rm -f $tmpfile
}
trap cleanup EXIT
do_test() {
RUNTIME=$1
./fin_ack_lat | tee $tmpfile &
PID=$!
sleep $RUNTIME
NR_SPIKES=$(wc -l $tmpfile | awk '{print $1}')
if [ $NR_SPIKES -gt 0 ]
then
echo "FAIL: $NR_SPIKES spikes detected"
return 1
fi
return 0
}
do_test "30"
echo "test done"