bootup time of a simple app

[gtom]

Hi,
I' started to play around with shoes4 a little bit. It is a nice project, I like your goal to build apps with same sourcecode for windows, mac and linux.
I'm working on a linux-laptop (Ubuntu 16.04), using RVM to install jRuby (Version-Info: jruby 9.1.17.0 (2.3.3) 2018-04-20 d8b1ff9 Java HotSpot(TM) 64-Bit Server VM 25.171-b11 on 1.8.0_171-b11 +jit [linux-x86_64]) and installed shoes via
gem install shoes --pre

My apps are working, but I'm wondering about startup-time: When I start an example app like:
``
Shoes.app width: 300, height: 200 do
background lime..blue
stack do
para "Welcome to the world of Shoes!"
end
end

``
with this command:
shoes example.rb
then it takes around 20 seconds on my laptop until the message appears on screen. Do I miss something in configuration or reading documentation? Any chance to speed up things?
Thanks in advance for any usefull hint
gTom

[jasonrclark]

Hey @gtom, thanks for checking things out.

A good part of the startup time comes from JRuby and the JVM itself. There's some hints on tweaking that to go faster at https://github.com/jruby/jruby/wiki/Improving-startup-time, but it isn't as fast as we'd like.

#186 has a few of our own notes on things we should look into around startup speed too. I've been working through some eye issues, but once I'm back working on shoes regularly I want to double-check that we're not doing anything to make it worse in Shoes itself during startup. Thanks for the nudge.