diff --git a/rebar.config b/rebar.config
index 0123ccd..af1bc03 100644
--- a/rebar.config
+++ b/rebar.config
@@ -21,7 +21,7 @@
 
 {escript_name, emqtt_bench}.
 {escript_main_app, emqtt_bench}.
-{escript_emu_args, "%%! -smp true +K true +A 16 +P 1000000 +Muacnl 0 +hms 64 -env ERL_MAX_PORTS 1000000 -env ERTS_MAX_PORTS 1000000\n"}.
+{escript_emu_args, "%%! -smp true +K true +A 16 +P 16000000 +Muacnl 0 +hms 64 -env ERL_MAX_PORTS 16000000 -env ERTS_MAX_PORTS 16000000\n"}.
 {escript_shebang, "#!/usr/bin/env escript\n"}.
 {provider_hooks, [{post, [{compile, escriptize}]}]}.
 {post_hooks, [{"(linux|darwin|solaris|freebsd|netbsd|openbsd)",