Attempts to set maxpid by adding an entry to the /etc/system file have no effect.
266 to 999,999
No. Used only at boot time to set the value of pidmax.
Value is compared to that of reserved_procs and 999,999. If less than reserved_procs or greater than 999,999, the value is set to 999,999.
max_nprocs range checking ensures that max_nprocs is always less than or equal to this value.
Changing this parameter is one of the steps necessary to enable support for more than 30,000 processes on a system.