This script installs a patched version of ruby 1.9.3-p194 with patches for boot-time performance improvements (#66 and #68), and runtime performance improvements (#83 and #84). It also includes the new backported GC from ruby-trunk.
Huge thanks to funny-falcon for the performance patches.
If you're using rbenv:
curl https://raw.github.com/gist/2600122/rbenv.sh | sh && rbenv global 1.9.3-p194-perf
If you're using rvm:
rvm get head && rvm reinstall 1.9.3-perf --patch falcon
Putting the following in your shell config (eg.
~/.bash_profile) will make Rails even faster, but will increase its memory footprint:
export RUBY_HEAP_MIN_SLOTS=1000000 export RUBY_HEAP_SLOTS_INCREMENT=1000000 export RUBY_HEAP_SLOTS_GROWTH_FACTOR=1 export RUBY_GC_MALLOC_LIMIT=1000000000 export RUBY_HEAP_FREE_MIN=500000