rewrite

eisrom_firmware/rel/vm.args.eex

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+## Customize flags given to the VM: http://erlang.org/doc/man/erl.html
+
+## Do not set -name or -sname here. Prefer configuring them at runtime
+## Configure -setcookie in the mix.exs release section or at runtime
+
+## Number of dirty schedulers doing IO work (file, sockets, and others)
+##+SDio 5
+
+## Increase number of concurrent ports/sockets
+##+Q 65536
+
+## Tweak GC to run more often
+##-env ERL_FULLSWEEP_AFTER 10
+
+## Use Ctrl-C to interrupt the current shell rather than invoking the emulator's
+## break handler and possibly exiting the VM.
++Bc
+
+# Allow time warps so that the Erlang system time can more closely match the
+# OS system time.
++C multi_time_warp
+
+## Load code at system startup
+## See http://erlang.org/doc/system_principles/system_principles.html#code-loading-strategy
+-mode embedded
+
+## Disable scheduler busy wait to reduce idle CPU usage and avoid delaying
+## other OS processes. See http://erlang.org/doc/man/erl.html#+sbwt
++sbwt none
++sbwtdcpu none
++sbwtdio none
+
+## Save the shell history between reboots
+## See http://erlang.org/doc/man/kernel_app.html for additional options
+-kernel shell_history enabled
+
+## Enable heartbeat monitoring of the Erlang runtime system
+-heart -env HEART_BEAT_TIMEOUT 30
+
+## Start the Elixir shell
+
+-noshell
+-user Elixir.IEx.CLI
+
+## Enable colors in the shell
+-elixir ansi_enabled true
+
+## Options added after -extra are interpreted as plain arguments and can be
+## retrieved using :init.get_plain_arguments(). Options before the "--" are
+## interpreted by Elixir and anything afterwards is left around for other IEx
+## and user applications.
+-extra --no-halt
+--
+--dot-iex /etc/iex.exs
+