path: knot_3.5.3-2/doc/troubleshooting.rst
you may try the single-purpose ``pstack`` utility::
    $ pstack $(pidof knotd) > backtrace.txt
.. _Bus error:


path: knot_3.5.3-2/doc/troubleshooting.rst
To generate a core dump of a running process, the `gcore` utility can be used::
    $ gcore -o <output-file> $(pidof knotd)
Please note that core dumps can be intercepted by an error-collecting system


path: knot_3.5.3-2/doc/troubleshooting.rst
    $ knotd ...
    $ gdb --pid $(pidof knotd)
    (gdb) continue
    ...


path: knot_3.5.3-2/python/knot_exporter/knot_exporter/knot_exporter.py
    out = dict()
    try:
        pids = subprocess.check_output(['pidof', 'knotd']).decode().split()
        for pid in pids:
            out[pid] = psutil.Process(int(pid)).memory_info()._asdict()['rss']