Normally, when a kid process dies, Squid immediately restarts the
kid. A kid experiencing frequent deaths is marked as "hopeless" for
the duration specified by this directive. Hopeless kids are not
automatically restarted.
Currently, zero values are not supported because they result in
misconfigured SMP Squid instances running forever, endlessly
restarting each dying kid. To effectively disable hopeless kids
revival, set the delay to a huge value (e.g., 1 year).
Reconfiguration also clears all hopeless kids designations, allowing
for manual revival of hopeless kids.