Project

jruby-startup

0.0
No commit activity in last 3 years
No release in over 3 years
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A set of utilities to improve the startup time of JRuby's command line
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 Popularity
Downloads
32,494
Stars
4
Forks
1
Watchers
4
 Releases
Current version
0.0.6
Total releases
6
First release
2018-10-09
Latest release
2018-10-15
 Development
Primary Language
Ruby
Licenses
Apache-2.0
Average date of last 50 commits
2018-10-12
Reverse Dependencies
0

 Dependencies

Development

bundler
~> 1.16
rake
~> 10.0
 Project Readme

JRuby::Startup

This is a collection of utilities to help improve the startup time of JRuby-based applications.

Installation

gem install jruby-startup

Usage

The utilities provided by this gem are described below.

generate-appcds

The generate-appcds command is used to generate an AppCDS, or "Application-specific Class Data Store" archive on OpenJDK 11 or higher. This archive pre-processes the classes in JRuby to eliminate some overhead at startup.

By using this utility and setting some environment variables, many JRuby commands can be sped up a fair amount.

Running generate-appcds alone will generate the AppCDS archive based on a command line of -e 1 as passed to JRuby. You can provide a different command line, in quotes, to the generate-appcds command.

$ generate-appcds
*** Outputting list of classes at /Users/headius/projects/jruby/lib/jruby.list
...

When the command has completed, you will see some environment variables to set that will enable the use of the AppCDS archive.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/jruby/jruby-startup.