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#!/bin/sh -e
# cyclictest measures event latency in Linux kernel by measuring the amount of
# time that passes between when a timer expires and when the thread which set
# the timer actually runs.
# shellcheck disable=SC1091
. ../../lib/sh-test-lib
OUTPUT="$(pwd)/output"
LOGFILE="${OUTPUT}/cyclictest.txt"
RESULT_FILE="${OUTPUT}/result.txt"
PRIORITY="98"
INTERVAL="1000"
THREADS="1"
AFFINITY="0"
DURATION="1m"
MAX_LATENCY="50"
usage() {
echo "Usage: $0 [-p priority] [-i interval] [-t threads] [-a affinity] [-D duration ] [-m latency]" 1>&2
exit 1
}
while getopts ":p:i:t:a:D:m:" opt; do
case "${opt}" in
p) PRIORITY="${OPTARG}" ;;
i) INTERVAL="${OPTARG}" ;;
t) THREADS="${OPTARG}" ;;
a) AFFINITY="${OPTARG}" ;;
D) DURATION="${OPTARG}" ;;
m) MAX_LATENCY="${OPTARG}" ;;
*) usage ;;
esac
done
! check_root && error_msg "Please run this script as root."
create_out_dir "${OUTPUT}"
# Run cyclictest.
if ! binary=$(which cyclictest); then
detect_abi
# shellcheck disable=SC2154
binary="./bin/${abi}/cyclictest"
fi
"${binary}" -p "${PRIORITY}" -i "${INTERVAL}" -t "${THREADS}" -a "${AFFINITY}" \
-D "${DURATION}" -m | tee "${LOGFILE}"
# Parse test log.
../../lib/parse_rt_tests_results.py cyclictest "${LOGFILE}" "${MAX_LATENCY}" \
| tee -a "${RESULT_FILE}"
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