Bundle Faster, Save Time

Bundler just annouced 1.4.0.pre.1 with --jobs support, which allows for multithreading gem installs -- I haven't looked at the code, but my guess is it's making use of the JOBS flag support in gmake (which multithreads C compilation) for navtive libs.

Anyway, here's my quick timing comparison on bundling a very large project with hundrends of gems:

rm -rf vendor/bundle
bundle install --path vendor/bundle
# time: 5:31.40 total

rm -rf vendor/bundle
gem install bundler -v 1.4.0.pre.1 --pre
bundle install --jobs=4 --path vendor/bundle
# time: 3:10.38 total

Enjoy!

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