[erlang-questions] spawn problem
Tue Mar 27 09:10:04 CEST 2007
Fernando Ipar writes:
> Hello all,
> I'm writing a little module to make use of erlang's lightweight
> processes and load test external programs/servers.
> Here's a very simple first version:
> ---- code ----
> test(_, 0) ->
> test(Command, Threads) when number(Threads) ->
> spawn('os', 'cmd', [Command]),
> test(Command, Threads - 1).
> start() ->
> Command = list_to_atom(os:getenv("Command")),
> Threads = list_to_integer(os:getenv("Threads")),
> --- end code ----
In addition to what's already been said, the above doesn't really make
use of erlang's lightweight processes. Each time you call os:cmd,
you're starting a (heavyweight) operating system process.
It may be that this is what you intended.
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