Set `ulimit` or `--delay` with large wordlist

[ariary]

Large wordlist will likely open many file descriptors (many go routine etc..).

By default OS (or mac) set a limit for fd opens (ulimit).

Set it if you are dealing with a large payload:

# set it
ulimit -n 65535 # or 10000000
# check
ulimit -n

[ariary]

-d 1 seems to work

If ambiguous, add --Thread flag to specify how many exec you can launch in the same time (useful if we need > 1000 exec/s in the same time as -d is in millisecond)