4 ms·
Yup. It is possible that your service is buffering output before actually writing it to the standard error stream. Try attaching to it with strace -e write PID
by yrro 10y ago
Yup. It is possible that your service is buffering output before actually writing it to the standard error stream. Try attaching to it with strace -e write PID and observe whether it is actually calling write(2, "some message"..., somenumberofbytes).
To approach this from the other direction, try this program:
import sys, time
while True:
print('test out', flush=True)
print('test error', file=sys.stderr, flush=True)
time.sleep(5)
With this service:
[Service]
Type=simple
ExecStart=/usr/bin/python3 /tmp/test.py