beremiz

Linux runtime: overrun detection for real-time timers and for plc execution.

2023-03-01, Edouard Tisserant
ac0e6de439b5
file isExecutable
Linux runtime: overrun detection for real-time timers and for plc execution.

If real-time timer wakes-up PLC thread too late (10% over period), then
warning is logged.

If PLC code (IO retreive, execution, IO publish) takes longer than requested
PLC execution cycle, then warning is logged, and CPU hoogging is mitigated
by delaying next PLC execution a few cylces more until having at least
1ms minimal idle time.
#!/bin/sh
cleanup()
{
find $PYTEST_DIR -name '*.pyc' -delete
}
print_help()
{
echo "Usage: run_python_tests.sh [--on-local-xserver]"
echo ""
echo "--on-local-xserver"
echo " all tests are run on local X-server. "
echo " User can see test in action."
echo " Any interaction (mouse, keyboard) should be avoided"
echo " By default without arguments script runs pytest on virtual X serverf."
echo ""
exit 1
}
main()
{
LC_ALL=ru_RU.utf-8
PYTEST_DIR=./tests/tools
if [ ! -d $PYTEST_DIR ]; then
echo "Script should be run from top directory in repository"
exit 1;
fi
use_xvfb=0
if [ "$1" != "--on-local-xserver" ]; then
export DISPLAY=:42
use_xvfb=1
Xvfb $DISPLAY -screen 0 1280x1024x24 &
sleep 1
fi
cleanup
ret=0
DELAY=400
KILL_DELAY=$(($DELAY + 30))
timeout -k $KILL_DELAY $DELAY pytest --timeout=10 ./tests/tools
ret=$?
cleanup
[ $use_xvfb = 1 ] && pkill -9 Xvfb
exit $ret
}
[ "$1" = "--help" -o "$1" = "-h" ] && print_help
main $@