No child processes - system limit?

Select or download this

    269        SELECT:
    270             {
...
    280                     die "select failed: $!";
    281                 }
    282         }

Select or download this

    core file size          (blocks, -c) 0
    data seg size           (kbytes, -d) unlimited
...
    max user processes              (-u) 27968
    virtual memory          (kbytes, -v) unlimited
    file locks                      (-x) unlimited

Select or download this

    RLIMIT_CPU :        -1
    RLIMIT_OPEN_MAX :   16384
...
    RLIMIT_AS :         -1
    RLIMIT_CORE :       0
    RLIMIT_RSS :        -1

Select Code to Download