Guys,
During investigation of JRUBY-1680, it turned out that JRuby startup
is much slower when rubygems are being loaded.
Simple profiling shows that loading of ruby gems is close to 2 seconds
of *EXTRA* time needed for jruby to start:
http://jira.codehaus.org/secure/attachment/31099/Load_Timings.txt
Few things that are loaded with rubygems seems to be not-needed, or at
least should not be loaded up-front:
- rubygems/security
- rubygems/remote_fetcher
When I commented out those two requires, in rubygems.rb, and in
rubygems/source_index.rb, the simple
time jruby -rubygems -e 'puts "hello"'
executed in 1.68 secs instead of 3.2secs with original rubygems, sweet
time reduction of almost 2x! :)
I wonder, can we do anything with official rubygems and maybe ask
maintainers to tweak the rubygems for us? :)
Thanks,
--Vladimir
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