def kill_stalled_processes(dryrun=True):
"""
Due to a bug in the Django|Postgres backend, occassionally
the `manage.py cron` process will hang even through all processes
have been marked completed.
We compare all recorded PIDs against those still running,
and kill any associated with complete jobs.
"""
pids = set(map(int, Job.objects\
.filter(is_running=False, current_pid__isnull=False)\
.exclude(current_pid='')\
.values_list('current_pid', flat=True)))
for pid in pids:
try:
if utils.pid_exists(pid): # and not utils.get_cpu_usage(pid):
p = psutil.Process(pid)
cmd = ' '.join(p.cmdline())
if 'manage.py cron' in cmd:
jobs = Job.objects.filter(current_pid=pid)
job = None
if jobs:
job = jobs[0]
utils.smart_print('Killing process %s associated with %s.' % (pid, job))
if not dryrun:
utils.kill_process(pid)
else:
print('PID not cron.')
else:
print('PID dead.')
except psutil.NoSuchProcess:
print('PID does not exist.')
def kill_stalled_processes(dryrun=True):
"""
Due to a bug in the Django|Postgres backend, occassionally
the `manage.py cron` process will hang even through all processes
have been marked completed.
We compare all recorded PIDs against those still running,
and kill any associated with complete jobs.
"""
pids = set(map(int, Job.objects\
.filter(is_running=False, current_pid__isnull=False)\
.exclude(current_pid='')\
.values_list('current_pid', flat=True)))
for pid in pids:
try:
if utils.pid_exists(pid):# and not utils.get_cpu_usage(pid):
p = psutil.Process(pid)
cmd = ' '.join(p.cmdline())
if 'manage.py cron' in cmd:
jobs = Job.objects.filter(current_pid=pid)
job = None
if jobs:
job = jobs[0]
utils.smart_print('Killing process %s associated with %s.' % (pid, job))
if not dryrun:
utils.kill_process(pid)
else:
print('PID not cron.')
else:
print('PID dead.')
except psutil.NoSuchProcess:
print('PID does not exist.')
